abfuck
When a guy places his cock in the center of another guys well defined abs and thrusts up and down, similar to titfucking, only in this case, a set of 6 or 8 pack abs.
I straddled Ryan while he lay on his back and abfucked him for a bit, those tight abs of his felt amazing.
ABFUCK
People who enter their name in urbandictonary.com and post the text in their story.
That is very abfuck