In homosexual encounters, the partner who prefers to do the penetration. There is no one typical personality attributed to these individuals beyond the preference to penetrate the bottom. Also known as the giver or the "guy" in the relationship. (the latter is generally used when attempting to describe preferred sexual rolls to unaware, unexposed, or ignorant breeders)
Son: Mom, I'm the top, don't worry about me.
Mom: So does that mean the guy or the girl??
Son: Ugh, mom, the guy.....*facepalm*