Top definition
During sex, you take the feces of your significant other and slam it on your chest, screaming vicious monkey sounds. You may also fling the feces at your significant other.
"Last night, I pulled a thilthy monkey on her. She dumped me immediately afterwards."
by Bigjoshdick11 June 15, 2017
Get the mug
Get a Thilthy monkey mug for your dog Paul.