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When you eat a McDonald's mcgriddle and take a minim of 3 jager bombs, after you friend hits you in the head with a baseball bat resulting in a co concussion; must finish all food and drink before passing out, otherwise it is only a mc'thumper attempt.
"Yo, I just got out of the er, I totally nailed that mc'thumper combo last night! "
by Tyathan May 30, 2016
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