The diarrhea and/or flatulence caused by drinking a lot of Guinness. It usually doesn't come into effect until the morning after.
by 1759 February 8, 2009
Person 1: Have you seen Tommy? Haven’t heard from him in ages
Person 2: Oh Tommy? Oh man, he’s got the Guinness shits
Person 1: oh fuck rip him then
Person 2: Oh Tommy? Oh man, he’s got the Guinness shits
Person 1: oh fuck rip him then
by Smartass Irish Bitch January 23, 2018