Top Definition
1. A friendly gathering usually involving hacky sacks and LSD.
2. To have conversations with a large amount of people for a long time
1. I took my family to a Roo Hoo last night.
2. We roo hooed for hours after seeing Tool
by Squilla November 25, 2007
5 Words related to Roo Hoo
retard; someone who is clumbsy and foolish; another definition: someone who is gay
stop being such a roohoo
by kell May 04, 2004

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