When you use your penis as a mallet and hit a gong to make a makeshift vibrator using the vibrations of the gong.
by Hampture April 19, 2021
Get the Gong Dongmug. by Joey Corn May 7, 2018
Get the DUNG DONGmug. by Idiotpahkinson September 30, 2017
Get the casual dongmug. by Anonymous Piglet 44569 October 2, 2017
Get the dong bong chongmug. by Peterfile July 25, 2015
Get the dong neckmug. 
