Either a term for a gay couple, or a man and a very young boy whom you suspect are engaging in sexual intercourse. If you spot the latter please report it to the local authorities.
Dude, I'm calling the copscuz I see Batman and Robin, and Batman's grabbing Robin's ass!
When you ejaculate on a girls face and stick a wash cloth over it giving the appearance of a mask. Once this step is complete, the younger and smaller homie jumps out the closet for round two.
Did you batman and robin that hoe last night??
"Hell yeah we rockedthe b and r. I batman'd that hoe and lil jimmy busted out the bathroom and went robin on her!"