"Damn Becky, he was foosting me so well I became his little pair of slippers"
To Foost; Giving someone a footjob with poop on your feet.
Generally human or dog feces but is also done with other animals fecal matter.
Person A: shit, i just stepped in dog poo
Person B: Gimme a footjob and foost me please.
Person A: this will be my first time foosting