The feeling, specifically after eating spicy food and When you know you have a really
big shit coming, but you're
nowhere near a bathroom and you have to fight desperately to keep it in. These shits tend to be very liquid, hence the
referral to a "River".
Example:
Person 1: Man, remeber when we left
the James Bay concert and then went for Indian?
Person 2: Yeah, why?
Person 1: Cause i had to really hold back the river until i got home, and when i
let it go, it got ugly. I don't think my wife was able to go into our bathroom for the next 3 days.
Person 2: Cheers.