vasectomy.....they gave me anesthesia.....guy waited grabbed sharp instrument and cut..........shit hadnt quite kicked in yet...............they heard me scream in the waiting room
I had something similar to that. The doctor needled my dick head,
then cut into it. I screamed quite loud.
For more long term but less intense pain lasting a few hours i've
had various situations that are quite similar in how bad they were.
OTOH some of my most pleasurable times have been while under
the influence of alcohol or testosterone {during sex}.