Top Definition
when you smile so hard and long your jaws hurt.
When you are first dating someone you are always smiling and your jaws hurt then you have "cheezitis". Or when you are in love with someone and they make you smile so much your jaws hurt then you have cheezitis.
#smilin #laughin #cheezin #grinnin #grillin
by Boobie11 February 02, 2010
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