While your girl is giving you head, right before you blow, you push her down on the floor, stick your big toes beside her eyes, pull them to look Asian and then bomb her in the face.
When one person verbally insults another so brutally that the other person is forced to concede defeat.
Steve: Dude, I'm all hyper. It's like I can't sit down.
Dan: What? Did you have a hot date last night?
Steve: Shit, man, what can I say to that?
Dan: I just Nagasakied your ass!
anything that is ugly, disguisting, gothic, skanky, backstabbing, parrot like, has love handles, needs to shower, has extreme BO, excessive dandruff, gigantic green pimples on neck, and neon rainbow clown outfits that do not match at all. basically, anything unhygenic and/or extremely ugly
"why are you so nagasaki? SHOWER!"
"don't wear those neon pink shoes with those neon orangepants and that rainbow shirt. you'd be pulling a nagasaki."