1) Feminine breasts present on a male's body; the progeny of steroid use, over-eating, or horomonal disorder.
2) A derogatory nickname for a bitchy, silly, annoying person of objectionable moral fiber. Can be used affectionately, or seriously, normally in a command statement in the latter case.
-> "John does tons of 'roids, and has a strange testosterone deficiency, and thus has a set of knockers that merit the wearing of a C-cup sports bra at all times. Man, does he have some bitchtits!"
-> (Dialogue employed for illustratory purpose)
Ando - "Yo bitchtits go get me a coors light!!!"
bitchtits - "I don't want to!! Wahhh!! Did you know I'm a pro paintballer?"
Ando - "You're a bitchtits! Your pathetic nature rules out the possiblility of your posessing any athletic prowess, ever!! Go get me mah fuckin beer!"
bitchtits - "Yes master"