An extremely full colostomy bag .. (after the Nagasaki Bomb)
My colostomy bag filled up so much last night, I woke up with the biggest Fat Man. If that thing exploded the shit would really hit the fan.
by justafleshwound2 January 22, 2018
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A cataclysmic bomb that put Hiroshima in its place, an showed the japs that they should never have gotten into the war
Person: "I love how many people the fat man killed "

Person2: "me too, but I prefer the 'splosion that the little boy made"
by JewHunt42 December 15, 2016
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A guy who could be called a BHM, if he's cute enough. What every FFA wants to hook up with.
"I guess he's not bad-looking for a fat man."
"I'd say he's not bad-looking for an *anything!*"
by Qit May 8, 2005
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A pizza cutter that has cheese and toppings on it from cutting a pizza.
Frankie licked his fat man's lollipop after cutting his pizza.
by jonesypeace January 7, 2012
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An event in high school men's track-and-field that normally takes place before the actual 4x400 relay. Each relay sqaud requires shot putters from that team to run one leg of the relay without dropping the baton (either one lap on an indoor track or 100 meters on an outdoor track). Very entertaining and comical. The winner takes home a pizza.
Dude, our shot putters just won the fat man relay...wish I could have some of their pizza...
by CloudIX March 15, 2009
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A game played on long car journeys. The aim is to spot fat men on motorcycles.

Once you spot one, you shout out 'Fat man on a Motorbike'.

This game can pass time, and winning can be very satisfying.
Joe: 'FAT MAN ON A MOTORBIKE!'

Darren: 'Yass! Let's start a new round.. cannot wait!'

--

Kid: 'But I can't be fucked going on a 2 hour car journey to see a wretched old shrivel in a hospital bed!'

Dad: 'Quit whining. Play fat man on a motorbike with Garry or something. And don't talk shit about my maw.
by Har-Har August 17, 2010
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The event when a fat man can literally sense that another person is trying to hide food from him.
Me: His backpack's unusually large..... My fat man senses are tingling... no wait, that's just my stomach rumbling.
by Xero _ Manifest November 3, 2010
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