spittleback 

a man faking an orgasm ,therefore spitting on the girls' back,making her think he got off.

she had way more emotionally invested than me so i had 2 "spittleback" the bitch 2 get away from her!

there's really only 1 time u can get away with spitting on a girl..."spittleback"

spittleback by HAYWIRRE July 13, 2012

spiteback

n. a harsh or spiteful reply, esp. to a friendly or innocuous comment or question.

"Hey, how you doin?"
"Like you fucking care."
"Dude, what's with the spiteback?"

spiteback by Droedan March 2, 2009