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1.
Grinning Like A Fucking Idiot - an Internet forum and chat interjection, found in limited but growing circulation, comparable to "LOL", "ROFLMAO" et al.

In observation of the fact that most people are not in fact "laughing out loud" when they type "LOL", and 99.99% certainly not literally rolling on the floor on conveying "ROFL", GLAFI is offered as a more honest and literally accurate alternative.
<hobebe>sounded like somebody didn't get in until 4am, hope that nice fellow who brought you home had condoms!
<crackodawn>what's condoms precious? glafi
by ninjadick May 12, 2011