Personally I've had an abscess from pinning calves. So for me ....big no no. I know the culprit wasn't due to dirty gear, so I would say I had "sterile abscess". No infection. But I had a huge welt and pain, so I took a syringe and extracted some clear shit that look almost what I injected. Hopped on some antibiotics in case I had an infection and everything worked out. Summary.....no more of that.....What next?? Injecting you're scrotum? No man hit some spots that have meat....