Hey, this is a great idea for a thread!
Lol, my favorite animanga catchphrase is actually quite embarrassing. Back when
Gundam Wing was the only anime I had ever seen, Heero's monotonous "Omae o korosu" got stuck in my head. I realized I was a goner when I found myself saying the exact same words, in the exact same deadly tone, to my roommate who stole my underwear.
When my inner pacifist is feeling particularly enthusiastic, I have been known to do the V-sign and shout: "Love and Peace!" (Vash from
Trigun.) Unfortunately, the last time I did this, I was in a lecture theatre and the lecture hadn't quite finished. I got kicked out.
And then of course there's Mugen from
Samurai Champloo: "I can take all you bitches on!"
You really don't want to know what context I used that line in.
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"They sicken of the calm, who knew the storm." - Dorothy Parker.