by Anthony Snead November 1, 2007

by Fangsta March 17, 2003

Taking ones dog and shoving it into a pillow case then hitting someone in the face with the dog inside the pillow case.
by Made In Dade December 9, 2008

Something that is both wack and cheesy, it was made up because of how it sounds alot like "mac-n-cheese" by kraft dinner
by cobimana May 7, 2010

by UWB is really not me February 3, 2010

Instead of being a social individual, I decided to spend the entire night fetty wacking it. 1738 ayy!
by itsthemagictuna October 30, 2015

A spontanious beating of the shaft. It is a very uncontrollable sensation. This is very common when one is hard.
Wayne: Man, my wacking shaft is really uncontrollable.
Courtney: That's understandable, wacking shaft happens to alot of guys i know.
Emily: Yeah, my brother had wacking shaft the other night
Courtney: That's understandable, wacking shaft happens to alot of guys i know.
Emily: Yeah, my brother had wacking shaft the other night
by Balllllsack July 9, 2010
