[[folder:In-Game Elements]]
* The arcade cabinets in the arcade venue. Apparently there are people in the Rock Band universe with initials like "FUK", "ASS" and "POO". That's right, Rock Band got away with an F-bomb in a T-rated game.
** At least one arcade cabinet, which shares a screen with the tour bus video game, has the score listed as 69/420.
* The "Blitz and Giggles" achievement in ''Blitz''.
* There are two versions of the song "Poker Face" available as DLC: the original Music/LadyGaga version, and a cover by [[WesternAnimation/SouthPark Eric Cartman]]. While it would qualify more as a ParentalBonus, keep in mind that the latter version is covered by a character from a series that usually ''isn't'' "T-Rated", so to speak.
** On top of that, the whole reason either version is included is because of a scene where Cartman, Kyle, and Kenny were playing "Poker Face" on ''Rock Band'', despite the fact that the song was not playable in the game at the time.

[[folder:Lyrics - T-Rated]]
* The PSP version makes you press buttons to [[Music/TenaciousD Jack Black]] saying "Drop trou, and squeeze out a Cleveland Steamer on my chest."
** And as of release on Rock Band 2, you [[strike:can]] are told to actually SAY IT (Granted since it's a talky). But please try not to laugh too much.
** And they didn't even bother to edit the preview track, which results in "shit" being blurted out, plain as day, ''twice''. That didn't just get past the radar, it blew right through it while flashing painted rainbow colors.
* Even more curious, Music/IronMaiden's "2 Minutes to Midnight" is heavily censored in Guitar Hero 5, but not in Rock Band. Namely the phrase "to kill the unborn in the womb" (the first two words are censored on the GH disc).
* Stupify by Disturbed actually leaves the swearing in [[SingingSimlish because you can't understand what they're saying anyway]]. It's rendered in the lyrics as random yelling.
* "[[Music/TheBeatles The Beatles']]" "Girl" they actually charted "Tit" in the harmony vocals!
* ...[[CannibalCorpse HAMMER SMASHED FACE]], people! Sure, it may be DLC and have indecipherable, growled vocals, [[http://www.truemetal.org/metalwallpaper/images/tombofthemutilated.jpg but this is the original cover art]] (the game uses censored art). [[http://www.lyricsdomain.com/3/cannibal_corpse/hammer_smashed_face.html And here are the lyrics.]] In case you didn't know, they're about a psychopathic killer... With a hammer!
** So is Maxwell's Silver Hammer in The Beatles: Rock Band, and they got away with that too. Then again, they ''are'' Music/TheBeatles.
** Just the fact that they have CannibalCorpse in their catalogue is a ton of shit past the radar.
* In Music/GreenDay Rock Band, all the songs have 'swear' words, save for the words 'fuck' and 'shit'. Example: In 'Letterbomb', you get to sing 'Where have all the bastards gone?' at the beginning. Fun! Also, 'masturbation' in Longview, and so on.
** Also, Longview contains the line "And I smell like shit" a few times, with the "shit" being drawn out for a while. The game reads this as "And I smell like shiiiiiiiiiii..." (it's actually written "shih" in the lyrics highway).
* In Rock Band 3 is Break On Through, including the lyric "she get high", which is pretty tame, but the most popular version of the song censors "high", and this version is heard more often in radio and games (including Tony Hawk). A remastered, uncensored version was released just in time to be incorporated into ''[=RB3=]''.
** Living in America starts with: Teenage pornstars.
** Portions for Foxes practically screams "sex", complete with orgasmic pants that you actually get to sing along to.
** Beast and the Harlot and This Bastard's Life also push the boundaries.
* "ZTO" by Devin Townsend, which at one point has the singer (taken over by Ziltoid) shout "Balls! Balls! BALLS!"
* "Roxanne" in the original Rock Band is about the singer being in love with a prostitute. It includes the lines, "You don't have to sell your body to the night" and "Walk the streets for money".
* "The Bitch is Back" by EltonJohn makes you sing [[ThisIsForEmphasisBitch "bitch"]] over FORTY times. Mind you that in a lot of songs they censor "bitch", so this was a big shocker to even the Rock Band community.
* There's the song that's not so obviously about suicide in ''Rock Band 2'', Today by Music/TheSmashingPumpkins. It's constantly played as a background song, and it has the line "I'll burn my eyes out".
** In a similar vein, there's "Hey Man, Nice Shot" by Filter in ''3.''
* The downloadable songs "[[Music/PearlJam Jeremy]]" and "[[Music/FosterThePeople Pumped Up Kicks]]" are both about [[AbusiveParents abused]] and [[LonersAreFreaks outcast teenagers]] [[MurderBallad killing]] [[TeenageDeathSongs teenagers]], with the former being more grim and the latter being more blatantly transparent. What's more, "Pumped Up Kicks" was ''included'' with ''Rock Band Blitz.''
** ''Rock Band 2'' has another Pearl Jam song, "Alive". It's not too well-known, but "Alive" is actually about ParentalIncest.
* Sleepwalker by Megadeth has a lyric about giving someone a Columbian necktie.
* Holiday in Cambodia. It would appear that Harmonix had a choice of what to censor with "Where you'll kiss ass or crack". If so, They went with "ass", as censoring that out has less impact on gameplay than "crack".
* ''Rock Band 2'' gives us "Aqualung" by Music/JethroTull. For those who don't know, the title character is implied to be a ''[[PaedoHunt pedophile]]'', with lyrics that mention him "eyeing little girls with bad intent" and "watching as the [[PantyShot frilly panties]] run".
* A rather confusing example: [[Music/{{Gorillaz}} "Feel Good Inc."]] is included and is censored... for the most part. There's a part near the end of the song where Music/DeLaSoul is singing-according to the game's lyrics-"Don't stop, get it get it", but some sources claim that he's singing a [[PrecisionFStrike Precision S-Strike]]. Basically, it's unclear if the game is exploiting a {{Mondegreen}} or not, especially when you consider that it's the same situation when they play the song on the radio.
* Regardless of why the song was included (see "In-Game Elements" above), the lyrics to [[Music/LadyGaga "Poker Face"]] are ''filled'' with [[DoubleEntendre Double Entendres]]. Not only that, but WordOfGod says that Gaga is actually singing a PrecisionFStrike in the chorus that's [[{{Mondegreen}} passed off as "poker face" in the lyrics]].[[note]]Surprisingly, [[WesternAnimation/SouthPark Cartman's]] cover actually has him singing the words "poker face", meaning that [[{{Irony}} the]] ''[[{{Irony}} South Park]]'' [[{{Irony}} version]] [[{{Bowdlerise}} is cleaner than the original]].[[/note]]
* How the heck did "Amazing Horse" slide through?! There's a part in the lyrics that goes "Have a stroke of his mane/He turns into a plane/Then he turns back again when you '''''tug on his winky'''''". What follows after isn't much better: after the woman replies with "Ew that's dirty!", the man who owns the horse notes that he probably shouldn't tell her where the... [[{{Squick}} "lemonade"]] comes from. And then "sweet lemonade" is mentioned throughout the song, just to drive the point home. [[spoiler:[[DontExplainTheJoke The "lemonade" is implied to be the horse's pee, by the way.]]]]

[[folder:Lyrics - E-Rated]]
* Somehow, the DLC song "Sex and Candy" by Marcy Playground is considered "Family Friendly".
* The kid's game, Lego Rock Band, which is rated for ages 10 and older. It still encourages singers to use the word "hell" and the phrase "willing to please" (in non-innocent context), plus ''Summer Of '69'' for what that's worth, and allows DLC featuring an evil overlord who makes a half-pony half-monkey monster ("using" "too many" monkeys and ruining the pony by his own admission). That said, quite a few fairly non-offensive songs aren't allowed in, such as Caprici Di Diablo which has no lyrics at all.
* Songs that are "family friendly" as labeled on [[http://www.rockband.com/music/songs the online song list]] are the only songs you can play on Lego Rock Band. Apparently "[[Music/DuranDuran Girls on Film]]" is family friendly, going by the idea that it's about female models.
* The lyrics of "Word Up!" by Korn seem to be an indirect order or criticism of the loose usage of the word "Fuck" in society, the fact that this made it into the Family-Friendly game is kind of hilarious.
* More "Family Friendly" songs:
** [[SexChangesEverything (I Just) Died In Your Arms]], [[DrivenToSuicide 2112]], [[Music/PapaRoach Last Resort]], [[Music/{{Sublime}} What I Got]], [[Music/BarenakedLadies One Week]], [[IncestIsRelative Barracuda]], [[DrugsAreBad Breaking the Habit]], [[StalkerWithACrush Every Breath You Take]], [[OdeToSobriety Helena Beat]], [[TheEndOfTheWorldAsWeKnowIt How Far We've Come]], [[BigBrotherIsWatching Hypnotize]], [[PrisonEpisode I Got Stripes]], [[SexEqualsLove I Melt With You]], [[LustObject Jessie's Girl]], [[TheImmodestOrgasm Light My Fire]], [[APartyAlsoKnownAsAnOrgy Love Shack]], [[FateWorseThanDeath Rime of the Ancient Mariner]], [[SexAsRiteOfPassage Sister Christian]], [[GriefSong So Far Away]], [[TearJerker Space Oddity]], and [[FamousLastWords The Show Must Go On]].
* Music/GreenDay's Minority is playable in ''VideoGame/LegoRockBand'', despite the lyric "A free for all, fuck 'em all" (It's censored in the game, but usually the game blocks songs with cursing regardless).
* ''Lego Rock Band'' includes a song ("Dig", to be exact) by the band Music/{{Incubus}}. '''''[[HornyDevils Incubus.]]''''' Granted, that's the name of the band, and the song itself isn't inappropriate, but still. They also got away with Music/BarenakedLadies.

[[folder:Rock Band World]]
* The description for a Music/BillyJoel goal has "Tickle those ivories—no not [[ADateWithRosiePalms those ivories]]"

But if that bothers you, there's a number of LighterAndSofter clothes and songs, [[Music/{{Metallica}} so you can avoid singing about suicide and the like.]]