To be made into a bitch via an action (i.e. getting dunked on in a basketball game, getting burned in a football game, etc.) or by an especially defeating and crushing insult, logic, or verbal confrontation.
"Dude, that guy just tee-bagged you on his way to dunking on your ass. You got totally bitchmade" or "Yo, how was formal last night with Veronica?"
"It went really well, we had a great time"
"That's not what I heard. I heard you got bombed and vom'd on her shoes"