Top Definition
Used to express extreme excitement almost as a form of a gasp, but not always in the form of laughing your ass off.
In a chat:

Anon1: Someone lick meh.
Person1: *licks anon*
Person2: Eww. Don't. You'll get anonitis!
Person3: Anonitis? LANMAO.
by Leanne and Dan March 25, 2008
8 Words related to LANMAO

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