The act of pressing on ones taint, in an effort to aid in the movement of extremely large, and rock hard turds.
Went to take a shit today and started giving birth to a 4 day old brick that was as long as a 20oz can of red bull. Had pull out the grundle assist. That was the last time I ate a whole plate of Mac and Cheese from there.
by JimmyJongTidings January 22, 2018
Get the grundle assistmug.