- From the first episode, Tenchi's "Oh, Crap!" reaction when he breaks his ancestor's (really his grandfather's) sword, which breaks the rock that sealed the chamber where Ryoko was imprisoned. Made funnier in the English dub once Tenchi realizes the true impact of his blunder:
Tenchi: I'm giving these keys back to grandpa and do as many chores as he says!
Tenchi: I've just used the oldest trick in the book.
- The entire last third of the episode, starting with Ryoko properly introducing herself, is this, with special mention of Tenchi tricking Ryoko by making her look out the window.
- From episode 2:
Ryoko: Now, I want your balls, please!Tenchi: Huh? (grabs his groin) No way! They're mine, and I'm gonna hang on to them!Ryoko: Oh, you numbskull, I meant the jewels on your sword!
- In episode 4 (one of two Hot Springs Episodes), Noboyuki attempts to get Tenchi to peep on the girls. He's trying to be all sneaky and everything... until he looks up and sees Ryoko looking over nonchalantly and freaking Noboyuki out.
- Ayeka slowly steps into the water to sit with Tenchi, prompting jealous Ryoko to steal her towel.
- A few moments after that, Tenchi's broken away from the feuding Ryoko and Ayeka to recover, only to have Sasami spot him. Seeing his state, she only has one thing to say: "You're a naughty boy, aren't you, Tenchi?"
- Kagato's teleporting onto Earth in episode 5... in the middle of the hot springs Ryoko, Ayeka and Mihoshi are bathing in. In spite of the danger they are in, cue a flustered Mihoshi and Ayeka calling him a pervert and tossing random objects at the guy looking briefly dumbfounded at being ignored as an enemy threat.
- The aftermath of the Single-Stroke Battle between Tenchi and Kagato. Tenchi wins however Kagato's spaceship Soja is ALSO cut in half as well.
- Just about the entirety of episode 7, but the ending deserves special mention. Ryoko and Ayeka attempt to get Tenchi all to themselves by sending Mihoshi back to Galaxy Police HQ and locking Washu in her lab, then setting up a trap on Tenchi's door that sends anyone who passes through it uninvited into the lake outside. However, Sasami defeats the trap by simply... knocking on the door and waiting for Tenchi to let her in, ignoring Ryoko and Ayeka's fighting, telling Tenchi about a really bad dream she just had. Ryoko and Ayeka can also hear Washu inside, so they try to rush in through the door, and get sent into the lake. To top off their Humiliation Conga, Mihoshi returns from Galaxy Police HQ, and crashes her ship on top of them. Seeing as how Ryoko and Ayeka are both Made of Iron, they naturally survive, but the looks on their faces just before the ship crashes are priceless.
- Episode 8 has Washu reveal her past... then attempt to win Tenchi over using her rarely-used adult form!
- Ryoko starts changing Taro's diaper... then she starts poking his penis... then he pees on her.
- Mihoshi trying to calm a crying Taro but when it doesn't work, Mihoshi starts crying like a baby herself. What's funnier is that when this happens the baby does stop crying and starts trying to console Mihoshi.
- Tenchi getting a little overheated (in more ways than one) when he hears Mihoshi in the bath trying to tell Taro not to suckle from her breast.
- Also, when you finally figure out why Sasami was inactive the entire episode.
- Ryoko and Ayeka's exhausted chants of diapers and milk, with the latter eventually drinking out of the baby's bottle.
- One part of episode 9 has Tenchi, Noboyuki and Katsuhito fixing up the roof of the hot springs they wrecked. Noboyuki accidentally smashes his thumb with his hammer, leading to Katsuhito chastising him... before smashing his own thumb. When Tenchi calls them boneheads, Katsuhito's able to distract Tenchi long enough to have him smash HIS thumb.
Katsuhito: Now who's the bonehead?
- The moment where Sasami runs towards and past Ayeka to hug Tenchi instead after she's been reassured about her situation.
- At the end of the episode, even Tsunami could not get a word in on a Ryoko / Ayeka argument. It's not often that you get to tell a goddess to shut up / stay out of this.
- Anytime Aekya and Ryoko fight is both a Crowning Moment of Funny and a Crowning Moment of Awesome.
- Ryo-Oki, the giant super... PINK ROBOT!
- Magical Girl Pretty Sammy!
- The entire scene after Misaki arrives for the first time in the OVA. Gets Turned Up to Eleven after Ayeka's, "My mommy!"
- Ayeka even warns Ryoko not to laugh, or she'll be sorry. Ryoko laughs anyway (complete with Face Fault), and comes face-to-face with Misaki in Mama Bear mode.
- Most of episode 13 qualifies, particularly everything after the Emperor of Jurai's arrival: The entire Royal Family (including Tenchi) seems to await his arrival with the appropriate amount of respect - until he does arrive: The Emperor is pretty much The Comically Serious: his demands for his daughters to return with him to Jurai are ignored, particularly Ayeka due to her constant bickering with Ryoko over Tenchi. Even raising his voice didn't get Ayeka's attention. Even Sasami said she'd never forgive him if she's made to leave Earth. Even Ryo-Okhi's dance in child form to him to make him happy has him initially utterly perplexed until the former starts crying. Funaho comforts Ryo-Ohki, while giving him a look that says "you're being a jerk". Really, the guy completely came off as the No Respect Guy in that episode. Ironic given his status.
- "You're going to get wet." Splash
- In the manga chapter on Mihosi's driving lessons, a student driver and his teacher freak out and crash when they see Ryoko emerging from a traffic sign.
- A whole bunch of them here;
- Misaki show up looking for Aeka and Sasami. At first the ditz thinks Ryoko is Sasami with a hair job and stress lines in her eyes - cue hair- and cheek-pulling. When Sasami shows up Ryoko gets tossed aside with great force(WHAM!). When Aeka shows up and indulges in silliness, Ryoko teases her - resulting in more hair- and cheek-pulling.
- Seiryo shows up to challenge Tenchi to a duel. All the harem backs Tenchi... except Washu, who thinks Mihoshi will win the duel. Everyone boggles until they hear a Bomb Whistle, upon which they all quickly raise umbrellas(and Sasami gives her dad one), just in time for Mihoshi to crash her ship into the lake for the nth time. Cue big splash and Sissy Villain bobbing in the lake.
- When Ryoko breaks into Tenchi's room looking for her gems, it ends up looking a lot like she's molesting him. Tenchi's dad is thrilled. As in he videotapes it.
- Tenchi's dad goes Outdoor Bath Peeping. Ryoko can fly. You do the math.
- When Ryoko fixes Mihoshi's Super Wrist-Gadget, the ditz comments that as far as she knows, only Space Police and Space Pirates are familiar with the technology... then asks if Ryoko is a jeweler. Cue Ryoko's brain breaking. Vengeance is hers, however; the gadget then detects Ryo-oh-ki, and when Mihoshi goes hunting, the furball eats her gun. Cue Mihoshi passing out and Ryoko laughing her head off.
Funny / Tenchi Muyo!
The OAV series Tenchi Muyo! (not to mention the spinoffs and sequels), has plenty of moments.