The idea is not to inject another guy's cum, much less urine into the bladder, it makes no sense, the idea is to masturbate while the other guy also does it and when he reaches in your urethra, expel his cum through your cock and feel the feeling that you are ejaculating the other guy's cum, and then to ejaculate your own, that is, ejaculating twice
Ngl this is a hot idea. Not only can you do it with cum, you can do it with piss and fill in the other's bladder and vice versa. I'd definitely love to see the implementation of it
i want to try it and let the guy piss inside first then blow his big loads into me filling my bladder up then jerk off with his cum n piss inside my bladder
Das würde ich gerne machen aber das fremde sperma muss drin bleiben und wenn ich abspritz soll es sich vermischen und dann bekiommt der spender alles wieder zurück von mir 😍
I've always wanted to collect another guy's cum in a syringe and then inject it into my urethra without it going into my bladder, place a plug at the opening of my urethra so the cum doesn't come out, then masturbate, remove the plug and ejaculate that cum along with mine as one.