A Shit-year-old is the term for a grown peron who behaves like a child, in a paticularly shitty way. The sort of person who refuses to belive cartoon characters aren't real, claiming that they "exist somewhere".
by Tatianapianist December 9, 2008

Jo: * pulls pants down *
Jerome: Ouuuuu ween wuar dat?
Guilherme: hahaahahahaha heen ass een Insulted little piece of shit
Jerome: Ouuuuu ween wuar dat?
Guilherme: hahaahahahaha heen ass een Insulted little piece of shit
by Peugeot driver March 25, 2024

by jim917 April 24, 2018

by Assshittinglegend April 28, 2017

When a man is performing anal sex and upon pulling out discovers there is shit caked under/around his penis head.
by Cooptastic November 20, 2015
