Top Definition
When something really bad happens. Comes from suck and in this case it is sucking something big and fat. Used in the worst of situations when not much else can be said.
Doctor: I'm sorry, but you only have a few more months to live.
Man: Damn. That sucks a fat one.
av Anonymous 10 april 2004
Used as an insult.

Equivalent to telling someone to fuck off.
Damn you're a douche bag. Go suck a fat one.
av Truuuuu 21 juni 2014
An insult telling the someone one to suck a d*ick
Person 1: Go suck a fat one!
Person 2: How fat?
Person 1: As fat as your mother
Person 2: Reported
av MeikSemith 28 januari 2016

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