Not terrible, but I went to a political event the next day instead of laying low. Walking Walking couple blocks in jeans made me a little sore for the next couple days. I recommend crashing on the couch for at least a day after the procedure, no matter what Doc says.
Diagnosis is I basically fucked myself up. Bruised and swollen ball. Technically it is blunt force trauma consistent with what one might receive when your ball slips under your leg and you sit on it. Anti-inflammatory and some light pain medication. Also no exercise or anything that might aggravate it, which means my wife will have to wait a few days for another dicking (from me, at least).
Mine was an absolute breeze. But for once in my life, I listened carefully to the instructions and did absolutely nothing for two days after. One of my buddies decided to play tough guy and blow his driveway and do all sorts of other horseshit right after his. He was rather uncomfortable for many days. I never experienced so much as discomfort.