Someone who's scared of doing something, precisely illegal stuff, like breaking rules etc.

Pronounced as - fut_2
Rixzab- hey! Aaron we're going on a school bunk, wanna join?

Aaron- No bro, you guys enjoy.

Rixzab- why so fattu bro?
by Rixzab February 09, 2014
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An Indian slang word used for a person who is a coward.
Don't be a FATTU yaar just tell alia you love her.
by dekh bhai March 04, 2018
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One who is massively overweight and uses gym equipment to watch Netflix on the treadmill.

Also sits around and eats KFC all day.
Dude 1:Dude, did you hear that the Reddit user u/GherkinP is a fattus maximus?
Dude 2: yeah, I heard he uses the treadmill to just watch Netflix.
by WellFuckYouToo December 09, 2019
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