Raking a buddys hairy shins with the bottom of your foot just to piss 'em off. Sneakers or flip-flops provide/enhances copious hair grab-age. (thnx to Adam S)
Bro Dude: Why the hell is Mark crying!?
Bro Ham: I gave him a nice shin rake!
Leaving someone behind (likely an annoying person) like you would leave a fat chick chatting you up at a bar, usually without said fat chick's knowledge.
Bro Dude: Hey, I thought you were coming with Larry?
Bro Ham: He was taking so long, I fat bitch'd him!