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.