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Don't be a Tim is the act of freaking out or getting pissed off after messing something up
Bob: You see that guy? He must be very pissed off about something.
Bill: Yeah man, totally.

Bob: Bill, Don't be a Tim and act like that.
by Johnny big d October 16, 2016
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2
The act of butting in, being nosey or walking into other peoples conversations. Walking into important meetings with out being invited and then talking crap.
by always angry midget May 25, 2011
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