a boy with a cunt, aka a female-to-male (FtM) transgender/transsexual who hasn't had bottom surgery (and in this case who looks like a boy instead of a man, like some FtMs do).
I really dig cuntboys. There's just something really hot about a boy with a cunt.
by Vic Silverpaw March 06, 2009
when a chick has so small of boobs that when she takes her shirt off she looks like a boy
Is that a chick or a guy?" Bob asks Bill. Bill replies, "I don't know. Go ask it." Bill walks up to this particular flat chested person "Excuse me, are you male or female?" The person answered irritably, "A female of course! What did you think?" Bob replies, "Oh, so sorry. I just thought you had no boobs at all. You look like a cuntboy, but come to think of it you're just a cunt.
by Cloocookachu December 07, 2010