Mine had to be a woman riding me reverse cowgirl, but she got really into it and I wasn't feeling it.

I don't know why I didn't think to say anything, but I didn't. Instead, I tried to get up (??) and as I tried to get up, I felt my dick bend.

LUCKILY nothing happened nor were there any serious injuries. But a genuine panic attack there. She felt it too and luckily we both had a time-out (as well as me being scolded for not communicating properly, which tbh 100% fair!)