Top Definition
Supergrinning is not the inane smile you get at the end of the sentence. It's when you are really excited and the grin is very broad, involves many double chins and signifies 'very pleased'. :)))))
Fetsiboomsticks was supergrinning when she came round the corner so I knew she had found the spilled milk. Her supergrin beamed 'delicious'.
by fetsiboomsticks February 25, 2009
6 Words related to supergrin

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