geeks and natural breasts

I was searching Oh No Robot - it searches for terms in online comic strips - way cool.

I found this strip about a woman in a boys’ club comic book store.  I take a little issue with the strip but I WANT that T-shirt.  Of course, no one but role playing gamers  in d20 systems would even get the reference.  It amuses me though.

Rereading the strip, I don’t know if the artist even meant the T-shirt as a joke.  Maybe only I think it’s smutty.  To be honest, that amuses me even more.