Top definition
you know when your smiling for a really long time and then all of a sudden when the situation isnt funny anymore, you stop smiling, but YOU CANT STOP SMILING because youve been smiling for too long, therefore its difficult to stop smiling.
"omg sarah, you have no idea how hard i just laughed. can you say permigrin ?!"
by Heidiixx May 27, 2009
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