IBS is short for "i bust shit"
It is a condition that makes you shit too much, and that might make you die. (sourse: trust me)
Many people have died from IBS, like
your mom, my
mom, and
joe biden.
Guy 1: "My
doctor said i might have IBS, because i be bussin'
too much shit, and that is dangerous for my life"
Guy 2: "Damn dude, that shit sucks"