Someone who works at a direct care facility and helps to take care of people with developmental disabilities--especially ones with genetic cognitive disabilities. Essentially a baby sitter for retarded people.
Friend: Hey, let's go watch the game tonight!
'Tard Sitter: Sorry, bro. I can't go out to the game tonight because I picked up an extra 'tard sitting shift tonight.
'Tard Sitter: Sorry, bro. I can't go out to the game tonight because I picked up an extra 'tard sitting shift tonight.
by redpillsatori July 15, 2021
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