Big Muddy River 

Having anal sex with a African American with a rather large ass whilst they have diarrea

I’d like to have a Big Muddy River with her

Big Muddy River by Beeno55 March 11, 2019

The big muddy river 

When you pee in his/her butt and then pull out really fast, causing a mudslide in the process.

I told him to leggo my eggo, but he didn't, so I gave him The Big Muddy River.

The big muddy river by Gaychel July 1, 2015