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The mysterious black, grody, substance that appears on skin and clothing after a good night at the bars. You could be out for 3 minutes or hours on end, but you'll end up with bar tar no matter what. Hails from Athens, GA.
Darline: "Where did this black stuff come from all over my flip flops and feet?"
Bonnie: "Darline, don't you know, that's BAR TAR."

Stephen: "Why do I have BAR TAR all over my green pants? I was only at the bars for 20 minutes. Someone would think I was waaaaasted if they saw these."
by Ahjiggity jig jig December 12, 2006
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