A word used just to irritate people. Say it many times in a short period of time and people will be annoyed. A key word in heckling a person.
Hey Noah, What is the homework? - asked Lexi

Shmao! Shmao! Shmao! - Noah replies
by TheSecretHiller April 12, 2016
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john this food from ere tastes lyk shmao
by woody45 January 3, 2007
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When someone is acting like a fucking dickhead say shmao many times in a row and people will be irritated as fuck and try and kill ur retarded ass.
SHMAO SHMAO SHMAO FUCKER
by Retardedpicle_101 December 9, 2018
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