Procure por qualquer palavra, como cunt:
 
1.
the act of motor boating but using a woman's ass cheeks in place of a woman's breasts
Bob really is an ass guy, so he decided on motor butting Nancy
por phildothegreat 18 de Outubro de 2013
 
2.
The act of perform a motorboat, but on someone's anus.
We were about to start some rusty trombone, but it wasn't hard, so I turned to doing some motorbutting.
por scumbeater 15 de Novembro de 2013