1 definition by NIsmoAU

The act of masturbating the morning of a hangover to help reduce the side effects caused by all the drinking done the night before.
Hunter pounded too many Miller Lites the night before and woke up with a severe hangover. The only cure was jerking it to get a Hangover-GASM.
by NIsmoAU August 1, 2018
Get the Hangover-GASM mug.