another mule is kicking in your stall

Adultery:
Your significant other is having sex with someone else.

In Muddy Waters "Long Distant Call" or in Koko Taylor "Evil" The line Another Mule is Kicking in Your Stall refers to being cheated on.

by Prince of Pugatory October 21, 2011

The cross-eyed mule kick

When a woman is doing a hand-stand while both kicking him in the eyes and giving him a blowjob until completion

“I have black eyes because my girlfriend gave me a cross-eyed mule kick!” - the cross-eyed mule kick

by BBC401 July 3, 2021