maghanap ng salita, tulad ng thot:
 
1.
(verb) The act of vigorously passing a particularly stubborn bowel movement. Usually involves grunting and the straining of one's sphincter. See also: Constipation
I hate when I'm in the bathroom at work and someone is grumpin' out a gnarly deuce. Gross...
ayon kay SneakyMe ika-26 ng Agosto, 2011
 
2.
(verb) The act of vigorously passing a particularly stubborn bowel movement. Usually involves grunting and the straining of one's sphincter. See also: Constipation
I hate when I'm in the bathroom at work and someone is grumpin' out a gnarly deuce. Gross...
ayon kay SneakyMe ika-31 ng Agosto, 2011
 
3.
grumpin is the slang term for actively making yourself grumpy(to the extreme)
grumpin comes about while talking to Asians about big trucks, and fast cars (besides Toyota MR-2's)
ayon kay Bryan Harving ika-18 ng Oktubre, 2007
 
4.
A person in the act of or a participant of farting in bath tub. pool or body of water and catching tainted bubbles in mouth.
A person sets in bath tub lets one loose and bends down to catch fart bubbles in mouth. - Grumpin -
ayon kay KSWingNut ika-15 ng Enero, 2011