A challenge similar to No Fap September that consists in not defecating during the entire month of July. (Pissing is allowed)
Person: I haven't pooped in three days but I just can't take it anymore. Should I just poop already, doctor?
Doctor: You're not a quitter, are you? Take some of these antidiarrheal pills and you'll be just fine.
Person: Thanks, doctor! Have a great No Poop July.
Person 1: Fuck, I'm gonna fail No Poop July, I feel it.
Person 2: Yea, you look like ya wanna shit real bad.
Person 1: *goes to bathroom and poops*
Person 2: Good Game.