Amish cement mixer

When you open the cavity of your partners rectum and pour in cement. In lieu of water you piss in their cement filled cavity and proceed to fuck them in the ass to mix the cement, much the way Amish churn butter.

“Dude, did you hear Jeremy gave Carol the Amish Cement Mixer?”
“Man, shut the fuck up. It’s her funeral and Jeremy is still cemented in her ass”