Yes, I do get some fluid buld up in the foreskin after hangin, but it is only on the exposed area (not the part that is covered by the wrap and hanger). It usually goes away after about 2 - 3 hours. I also get a fluid build up in my foreskin after jelqing, but more evenly distributed.
Laughing while hanging??? That’s easy! Try sneezing! No seriously, I have allergies with hay fever and sometimes when I sneeze while hanging I worry that I’m gonna rip my dick off! I’ts a scary feeling. I can do PC’s when I hang but to me it feels uncomfortable.