An act of brotherly love involving two fraternity brothers seeking true brotherhood. One brother grabs hold of the other's bum and proceeds to "rump it".
by Brotherhood and Philanthropy September 11, 2016
Get the bum rumpmug. by PERSON NAMED ANONYMOUS June 24, 2025
Get the Bummug. by Jimhug October 17, 2023
Get the A bummug. by MRJAMAL123 November 20, 2023
Get the Trailer park bummug. by Beefanny February 15, 2018
Get the Double Bummug. 
