Where I come from, marriage is a sacred institution, so if you cheat on me... [shocks Ataru] (Episode 1)
Thank you, Ran. I will think hard about this...
Umeboshi? GIVE ME UMEBOSHI!
I don't care if it's a lie. I just want you to say it. (Movie 5)
Darling, you IDIOT! Do ya wanna really forget about me!? (Movie 5)
Even if it takes a "lifetime", I'll make ya say it! (Movie 5)
I refuse! I'd sooner go to Iscandar than fight and be killed by an Oni! (Episode 1)
on his game of tag with Lum: But to grab those horns, naturally I've gotta grab the body first... (Episode 1)
speaking English while flirting with a girl in Hawaii: Hi! I'm Ataru Moroboshi, Number One Japanese Boy! Please date with me!
I'm gonna run away from home! Will that make you happy?! WAAAAAAAAA!!!! [runs out the front door in his sock feet, then comes back for a second to put his shoes on] Damn it! [runs back out the door] WAAAAAAAA!!!! (Episode 2)
When will you learn that I always do things without thinking of the consequences? (Movie 2)
I HATE YOUR GUTS! (Movie 5)
You idiot, if I say "I love you" under these circumstances, How do you know if I was telling the truth? (Movie 5)
I'll never forget, I'll... never... forget..., I'LL NEVER FORGET! ...you, Lum... [collapses] (Movie 5)
I'll say it on my "deathbed"! (Movie 5)
These quotes come from Wikiquote's Urusei Yatsura pages and are available under the Creative Commons Attribution-ShareAlike License.