Top Definition
When you are laughing so hard you lose control of your basic abilities, including and not exclusive to: the ability to say what you are trying to say, your ability to be understood by those around you; in extreme circumstances, you lose continence
" I understood you until you turned into a laughtard (n.)"
"I was giving my speech and my mind when blank, then I just lost it and went laughtard(n.)"
by unicorn wrangler June 21, 2013

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