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The point in which your body falls asleep at your cubicle or desk, possibly multiple times in a day or shift.
I just finished my Popeye's lunch, and I hit the Wall of De Mesa.

I slept 2 hours prior to my 5 a.m shift; I will meet the Wall of De Mesa at 8a.m.
by Feenie Feen December 18, 2014
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