Top Definition
A made up character who always gets the short straw.
His whole life is a series of failures,which is what makes him so hilarious

Known for his love of green hats and likeness to the Mr. Men character Mr. Strong.
Tayla: Ohcrap I only got 64% on my maths exam

Harriet: At least you're not Mr. Square.
by Dartron November 02, 2008
6 Words related to Mr. Square

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