look up any word, like smh:
 
1.
When the guy is taking his partner from behind in either hole he tells his partner

"I'm gonna come, I'm gonna come!"
While saying this he brings down his elbow in their back thus creating a spinal tap.
"Dude, last night Tammy and I were doing the dirty and she was getting pretty wild. I totally performed the spinal tap."
by Wilmer Fudd March 08, 2010