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When someone tries to multitask but get distracted by the one thing and forgets about the rest.
Dude: Hey why are you not talking on msn

Dudette: Sorry im faultytasking
by Tea&Cake September 01, 2009
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Kind of like multitasking, but the person doing the tasks can only perform one at a time. This is completely unintentional. The faulty-tasker truly believes they are being efficient.
Quit faulty-tasking!
via giphy
by Author1992 September 14, 2019
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