A butt pool is any swimming pool or body of water adequate to submerge one's posterior. Conspicuous examples abound from the Hilton time-share complex in Las Vegas to the geothermal Blue Lagoon in Iceland. A butt pool worthy of the name will be temperate, and ensure a seamless water-butt interface. Sulfur geysers in Yellowstone or glacial runoff, for instance, would not meet these criteria being too hot and cold, respectively, to comfortably drag one's derriere about in their midst.
Think I'll relax by the butt pool for the rest of the day.

I heard Tuscany has a fine selection of butt pools for the discerning traveler.
by RexfromBimini August 16, 2017
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noun - the cleanest, freshest booty hole on a female. this can only be achieved by spending at least 5 min in a well chlorinated pool.
Person 1: Did you pin that chick's legs behind her head and munch that booty?

Person 2: Absolutely. We went swimming so you know she had the bombest pool butt.

The international symbol of pool butt is when you tightly curl your first finger and thumb and bring to your lips. You then repeatedly make loud kiss noises to simulate the act of kissing a booty hole.
by BROs in paradise August 27, 2012
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