Yiff n' Slip
A Yiff n' Slip is when someone is jerking off to furry porn and cum falls on the floor, then the Yiffer Slipper slips on his own semen. This can also be done on purpose as a prank.
"how was your night?"
"good, until I did the ol' Yiff n' Slip"
"good, until I did the ol' Yiff n' Slip"