1 definition by Bananzattack

Top Definition
GIS
Grin In Silence

When you aren't actually LOLing you can GIS. Some people think that when you write LOL you have to actually be laughing out loud. They might call you out on this. If you know someone like that, use this acronym instead, it's safer.
Person 1: (semi-funny joke)
Person 2: GIS
by Bananzattack May 12, 2009

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