* Anytime when Mac is having a sugar rush. Especially in ''Partying is Such Sweet Soiree''.
* Try watching [[EnsembleDarkhorse Cheese's]] first episode with a straight face. It's impossible.
** "''Hot rod flames!''" "''Bunnies!!''" They eventually compromise on [[BreadEggsBreadedEggs flaming bunnies]].
-->'''Bloo:''' It's like I don't even know you anymore.\\
'''Mac:''' Shut up! At least the bunnies are on fire.
* "Frankie My Dear":
** [[TotemPoleTrench ORLANDO BLOO]]. The part where he's trying to eat the steak is the funniest thing to ever come out of Foster's.
-->"Oh, silly me. A spoon can't '''pick up a steak!'''"
** Bloo's "putting aside our differences" speech to Mac, and then with the delivery boy, and finally with Prince Charming. He always adds "especially not Mac".
-->'''Bloo:''' Especially not--\\
'''Mac:''' ''DON'T SAY IT!!''\\
'''Bloo:''' Fine.
* ''Bloooooooo''. From Bloo's {{Lampshad|eHanging}}ing of horror B-movie plots (and getting this particular one's premise exactly right) to this little gem:
--->'''Wilt''': Who ya gonna call?
--->'''Coco''': [[Film/{{Ghostbusters}} Co Co-co!]]
--->'''Wilt''': They've been out of business for years!
** The scene where Bloo [[TheManInTheMirrorTalksBack talks to his reflection in the mirror]]. First Mirror!Bloo sprouts a trumpet from his nose and plays Dixieland jazz, to which Bloo reacts by [[UnusuallyUninterestingSight muttering to himself about "feeling a little delusional"]]; then, when the others try and catch Bloo after mistaking him for a ghost, Mirror!Bloo yells at regular Bloo to "RUN FOR IT!"
* ''The Bloo Superdude and the Magic Potato of Power''.
** HerCodeNameWasMarySue has never been so downright hilarious. BEAR ARM GO!
** "Can't... break... free... too... many... muscles...."
** The ComicBook/TankGirl ShoutOut sequence.
* "Crime after Crime." Especially when Frankie repeatedly fails at making "it," thanks to [[spoiler: people jumping on the bed.]] Gets funnier every time.
* Bloo's voice actor misread one of his lines in "Destination Imagination", which leads to this gem for older viewers.
--->'''Mr. Herriman''': Oh, Heavens! What's happening?!
--->'''Bloo''': You '''pissed him off''', that's what's happening!
* "Bloo's Brothers". Mac brings Bloo to show and tell one day. All of Mac's classmates think Bloo is awesome, so they all imagine weird clones of Bloo, only to leave them at Foster's. Bloo being Bloo, leads to this:
-->'''Bloo''': ''(Addressing his doubles)'' I am Bloo, and you are my minnions! Muhahahahahaha! ''(Clones laugh)'' Alone, you are singular knockoffs of a cool dude, but together we are as strong as any army! And I think we all know what we must do. ''([[{{Beat}} The Bloos blink and stare at each other]])'' That's right, we must [[MundaneMadeAwesome sing the Ice Charades theme song in one hundred-part harmony!!]]
-->''(Inside the community room, the other Bloos gather and sing.)''
-->'''Bloos:''' ''(Singing)'' Oh, Ice Charades, you're so icy and fun
-->Oh, Ice Charades, it's not the "capade" one
-->Oh, Ice Charades, every year comes to town
-->Oh, Ice Charades, get your money back if a skater falls...
-->'''Comically Deep Voiced Bloo:''' Dooooooooooooooowwwwwwwwwwwwwn.
-->'''Frankie''': (Marches in as the song ends) Holy guacamole!
** "Hi Mac. I see you've met Comically Deep-Voiced Bloo!"
* "The Big Cheese"
** '''[[PsychoStrings "I! Found! A! Carrot!"]]''' * stab* * stab*
* "Race For Your Life Mac and Bloo:" The titular buddies are racing each other to Foster's, but Bloo gets lost along the way. He seeks the help of a senior citizen sitting on a park bench, but it turns out the man is more than a little hard of hearing:
-->'''Bloo:''' Excuse me, could you tell me how to get to Foster's?
-->'''Old Man:''' Whazzat?
-->'''Bloo:''' Foster's! I need to get to Foster's!
--> '''Old Man:''' Flatsberg's, ya say?
--> '''Bloo:''' * getting annoyed* '''Foster's!''' Foster's Home for Imaginary Friends!!
-->'''Old Man:''' Flatsberg's Cone for Mackinary Hens?
--> '''Bloo:''' '''''Foster's Home For Imaginary Friends!!!'''''
--> '''Old Man:''' Flatsberg's Gnome Floor in Mackin' Harry's Pants?!
--> '''Bloo:''' '''[[PunctuatedForEmphasis Foster's!!! Home!!! For!!! Imaginary!!! Friends!!!]]'''
--> '''Old Man:''' Flatsberg's Foamy Foreign Asian Gary's Plans??!
--> '''Bloo:''' Foster's.
-->'''Old Man:''' Flatsberg's.
-->'''Bloo:''' Home!
--> '''Old Man:''' Dome!
--> '''Bloo:''' For!!
-->'''Old Man:''' Wharf!!
--> '''Bloo:''' Imaginary!!!
-->'''Old Man:''' Engaged Blueberry!!!
-->'''Bloo:''' '''FRIENDS!!!!'''
-->'''Old Man:''' '''''[[NoodleImplements Soup!!!!]]'''''
** Bloo's conversations with the clerk at the convenience store certainly qualifies.
* "Squeeze the Day"
** [[http://www.youtube.com/watch?v=L_IlsPypwZs It's hoooooooooooooot in Tooooopeeeeeeeeeeeekaaaaaaaaaaaaa.]]
** Later:
--> '''Bloo:''' I AM PIERRE ZESCHWANN. [[MakesJustAsMuchSenseInContext I PUT ZE DUCKS IN CRYSTAL POND.]]
--> I AM PIERRE'S EVIL BROTHER! I ''STEAL'' ZE DUCKS FROM CRYSTAL POND!
--> I AM PIERRE'S THIRD COUSIN! I HAVE ZE EAR ON ZE SIDE OF MY FACE!
--> I AM PIERRE'S GIRLFRIEND! *KISSING NOISES*
--> '''Mac:''' What are you doing?
** Mac and Bloo are hilarious in this episode. They make the best prank call in history.
--> "THIS IS A JOOOKE!"
* "Good Wilt Hunting" has this hilarious line when they are heading to Japan-
-->'''Bloo''': [[Franchise/{{Godzilla}} GODZILLA!]] WILT'S CREATOR IS GODZILLA!
* "Store Wars"
** [[http://www.youtube.com/watch?v=nHlgEMy-BUc Bloo getting store clerks to massage him with a toy cactus.]]
** RIP OFF ARTIST! *kick* OW MY SHIN!!
** The IronicEcho at the end where Coco says it to Bloo and the epic ContinuityNod in a later episode where Mac stops him from doing it again at a flea market.
* This particular exchange from the camping episode:
-->'''Bloo:''' (fishing) I said I wanted bacon and eggs!
-->'''Mac:''' Okay, [[SarcasmMode let me just go back in time and prevent you from eating the ones we brought!]]
-->'''Bloo:''' [[TooDumbToLive You can do that?]]
** This is especially funny because Bloo's DoesNotUnderstandSarcasm moment here is coming 3 episodes after he was specifically taught about sarcasm.
* The Funny Bunny Song in "World Wide Wabbit".
* This little gem, from Coco and Mac.
-->'''Coco:''' (In a sinister tone) Co-co, co-co co co.
-->'''Mac:''' Coco...I think if we did that, we'd go to jail.
* When Bloo decides to sell merch relating to his cookies rather than the cookies themselves we get this exchange where a customer calls him out on it:
-->'''Girl:''' Mister, can I have a cookie please?
-->'''Bloo:''' We don't sell cookies anymore.
-->'''Girl:''' You're dumb.
* "Cuckoo for Coco Cards": Bloo saying [[http://www.youtube.com/watch?v=6nhJEqkAQWA "Come ooooooooon"]] till people give him their cards.
* "Goodbye to Bloo": The episode itself ended on a [[BittersweetEnding bittersweet note.]] The ending where basically the opening is reversed, reducing fans to tears, however there was MoodWhiplash, because beforehand there was a crowner when Cheese is revealed to have permanently moved into Foster's, followed by all the imaginary friends voicing their displeasure at this development.
* In "Cookie Dough" when Bloo is listing the positive attributes of his and Mac's cookies he states that they're free of dioxins. When no one knows what they are, he gives a detailed description of them then boils it down to "[[LaymansTerms They're bad for you]]".
** "YAAAAAAAAAAA!"
* "Joy ride with happy face? Never!"
* From "Make Believe It or Not":
** When we join Bloo and Mac the next day:
-->'''Bloo''': (putting on a fake mustache and sombrero) [[NoodleImplements Okay, so just act like you don't know me and the eclairs are ours!]]
** Bloo's complete overreaction to the power going out.
-->'''Bloo''': -we might as well just lay on the floor and die!
* The movie from ''One False Movie''. Coco's subtitles are French, but they're French for "I do not speak French!".
* "Bloo Done It". That whole episode is one big hilarity after another.
* "Beat with a Schtick". Between the hurricane of puns, and the comical evil-ness of Madame Foster and Herriman, not to mention the ending, that whole episode is funny.
* Pretty much all of "My So-Called Wife", especially Coco's crash course in etiquette and Bloo's sarcasm lessons.
-->'''Mr. Herriman:''' (''after Coco jumps in her soup bowl'') Oh, good heavens, woman! [[ComicallyMissingThePoint That's the fine china!]]