Expression used to describe something extremely revolting or disgusting.
1) Carrie had a face that could gag a maggot.
2) When Bruce farted it was enough to gag a maggot.
by Wiseman July 17, 2006
Something so repulsive, so disgusting, so putrid as to actually make a maggot gag.
The dead carcass was so smashed and revolting, that it could gag-a-maggot.
by Steve Burke February 8, 2004
Girl 1: "Did you break up with your boyfriend?"

Girl 2: "No, he said he was sorry for forgetting my birthday."

Girl 1: "Gag a maggot with a spoon."
by Kayaluki!!! October 24, 2009