water squatter

Someone who pretends to be a resident in a neighborhood so they can use the community pool. It can be done with or without a resident's knowledge.

Person 1: How are you planning to beat this heat wave?
Person 2: I am gonna lay in the pool.
Person 1: You have a pool?
Person 2: No, but my friend has one in their 'hood. I am a water squatter by pretending I live with them.