EXAMPLE:(do you need one?) OK here it is...A fat black womanwoman is visiting her proctologist and upon being examined the Doctor proclaims; "Look nurse, her rear end looks just like a purple buffalo!"
A sexual act in which a man, when he's nearing climax, puts on a wig of dreadlocks (This has the best effect when the wig comes on while her eyes are closed, so she gets the full effect when she opens her eyes.) And just as she's thinking "What the fuck?" you pull out and cum all over her while singing the "Oy yoy yoy. Oy yoy yoy yoy. Oy yoy yoy, yoy yoy yoy yoy yoy" section of the chorus of Buffalo Soldier by Bob Marley.
The act of allowing the girl to climb on top of you. You then immediately slap the right side of her ass as if you were a cowboy slapping a buffalo. Once her eyes light up and she realizes she was just branded, she will give a stare just like a buffalo. Buffalo slapping becomes even cooler while partaking in Hate-Sex.
"Dude, she wanted to try something new, so I buffalo slapped her."
"Man she was hot last night, i kind of wanted to have hate-sex with her and buffalo slap that shit.