I'm gonna rep you, just because i made a jenkem shit joke today, and i burst out laughing when i read your question. to actually answer you, no. ive never had to take a massive shit after a dxm trip.
One of the side effects for a lot of people is diarrhea, but I don't really get it that bad. I get gas, but never wake up in the middle of the night. I usually piss a lot though.
man i hope you really huff jenk. only because someone who talks about it as much as you must have an addiction to poo
i couldn't crap enough to keep up with my addiction so I had to do both, or suffer painful withdrawls from human feces.