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To nod one's head in agreement so vigorously that you appear to be headbanging.
My friend asked me if I thought Jennifer Lawrence was hot, I yesbanged so hard that I hurt my neck.

I read a review that Five Guys had the best burgers in town and I began yesbanging because those are the best fucking burgers I've ever had.
by reallifecartoon August 16, 2015
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