an evolved version of the word 'timmy' used in the popular television series southpark by a handicapped child named timmy. The word 'timmoi' is used to describe a person (handicapped or not) who is acting like a retarded or handicapped person on purpose or not.

A person injuring themselves or failing to pull off a procedure whilst attempting a stunt or activity may be considered a 'timmoi'
"john stop being a timmoi"

"did you see that timmoi"

by James.Greentree September 8, 2008
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