2 definitions by Rachael and Nicole.

Top Definition
The act of making a wheezing noise while laughing.
"OMG! what you just said, made me laugh so hard i started HISSSing! HISSSSSSSS!"
by Rachael and Nicole. July 27, 2008

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The act of laughing so hard in a public quiet place, that you have to put your head down in your arms so no one hears you. Sometimes you laugh so hard you hisss
my friend texted me a joke and i modi in public.
by Rachael and Nicole. July 27, 2008

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One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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