Desiigner Can't Talk About Teyana Taylor's Underboob

After Desiigner enjoyed his first VMA there was one thing on his mind, like all of us -- Teyana Taylor's ridiculously hot body in Kanye's "Fade" music vid, but his problem is ... he can't talk about it.

We got the Best New Artist nominee leaving the after-party at Up & Down in NYC, and he told us -- as only Desiigner could -- why he's worried about discussing Iman Shumpert's girl.

This clip is hysterical because, of course, he still couldn't resist rating TT's body at work. He's only human.