Acronym for "Just Took A Big Shit." While it can be used literally, it often refers to the positive feelings one displays following the completion of such a task. Often used in a similar way to JBF, to describe the satisfaction portrayed by someone after they are done.
My brother gets such a JTABS glow on his face after stuffing his face on Thanksgiving.

by Bernie MacEnernie November 12, 2007
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