My ex's Dad is a retired prison warden and this happened 40ish years ago. So it was a different time and pretty unprofessional to us. They had a prisoner who would put his ♥♥♥♥♥♥♥ up to the bars and fart at or try and ♥♥♥♥ at the guards when he could or just push farts out.
One time he managed to hit one of the old salty guards with diarrhea. My ex's dad was with him and a rookie but didn't get hit. He was taken to psyche and determined to actually be very intelligent but just liked ♥♥♥♥♥♥♥ with people since he was there for life for a long list of things. Mostly molesting kids and women.
My ex's dad was there with the old salty guard that got hit last time. As expected the guy put his ass up to the cell to try and do it again. Except salty old guard had pepper spray ready and shot it directly into his ♥♥♥♥♥♥♥. It wasn't the foggy type you usually see on cops or anything. It's a stream with decent PSI. In about 30 seconds flat the guy took off running from the bars and hit the wall face first and broke his nose. He never did it again.
It was unprofessional, arguably cruel but hilarious and somewhat justified in my eyes.