What is Cleveland Motorboat?
1.
During the act of sex when a man takes a dump on the chest of a women then places his head in between her breasts that are covered in feces and shakes his head back and forth very rapidly while making the "brrr" sound of a motorboat.
(sometimes refered to as a Cleveland Steamboat)
That girl was so kinky that she let me do a Cleveland Motorboat to her before I busted it all over her face.
See