1. the groaning sound you make when you try to push your shit or a fart out from you butt.
2. Having a nice juicy shit
3. A squat toilet
1. Dennis: umph umph
Ronald: What's wrong?
Dennis: I think i've got constipation... I'm literally
2. Nicholas: Dad, what are you doing in the bathroom?
Dad : I'm doing an umph umph.
3. Donald used the umph umph just now. It looked like he had diarrhea.