Top Definition
When you feel the laughter, you want to laugh, but there's nothing funny. Nothing has made you laugh so you hold it in for what feels like 3758634763 years.
Leslie: I feel like laughing but it won't come out. I think I ahve laughter-backup

Kevin: -_-
by LesL13x August 16, 2007
7 Words related to Laughter-backup

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