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1.
When studying for important exams, such as university finals, and one allows oneself to devour great quantities of junk food and snacks, a person will gain exam weight. This is the weight put on during exam time, as a direct result of said eating. Similar to winter weight that people gain during Christmas.
"I've been eating so many brownies during exams, I think I've gained some weight."

"Aye, that'd be the exam weight"
by Simbaaaaaa May 05, 2013