<human>: So a little background.  There's this girl who it talk to a lot, and she doesn't really have a particularly big rack.  Now I'm no perv but I'm just a dude being a dude and I just notice these things.  Anyway, one day we were talking and the topic (somehow) became what she would do of someone looked down shirt.  Now I'm pretty comfortable around her so I thought it would be a good idea to make a joke on that statement.  I idiotically said, "well why would anyone want to look down your shirt; there's nothing to look at!" She looked at me in such disgust and simultaneously covered her nigh non-existent rack.  Oh yeah and she's one of the popular ones. So now my ENTIRE school now thinks I'm a perv who looks at girls with small tits and thinks I have a petite fetish.  People usually tend to stay away from me now.

Can you succinctly summarize the text in 1-3 sentences?
<bot>: I made a joke about a girls rack and she told everyone and now my school thinks im a pervert with a petite fetish