forced hand job
Due to uncontrollable forces, even an unsolicited/unwanted hand job from a beastly woman will eventually come to fruition.  Despite any feelings of inhibition or revulsion, what begins as a fearful struggle...inevitably transforms in to a puzzling pleasure...which culminates in a primal scream.  (This always happens right before you were about to call the police.)
"I was so drunk, but I could still tell she was ugly.  After the forced hand job though, The Darkness took over."

"This scary chick tied me down and started giving me a forced hand job.  I was terrified at first...but right when I reached for the phone to call the cops, I came."

"She is such a swamp donkey that all she can look forward to is giving a forced hand job to some guy she drags home after last call."