Definitions by allhailkingme

grobus 

the feeling you get right before you take a shit and you know its gunna be a big one cause its expanding your intestines. thats a grobus. see also coolnerd15

arggggggghh! beeeeeaahhhhhhhh! puff! plop!

that arggggghh involved a grobus.

grobus by allhailkingme February 17, 2007