fanny dipper

English edit

See fanny (“backside”).

fanny dipper (plural fanny dippers)

(US, slang, rare) Somebody who enters a body of water for recreational swimming or bathing.
- 2019, Robert M. Craig, Maryland's Ocean City Beach Patrol, page 7:
  Thirty-plus years earlier, it was on the beach in front of this building, with its lookout tower and rescue boat at the ready, that the town's earliest "fanny dippers," bathers, and swimmers of varied abilities, first made a practice of entering the ocean "in front of the lifeguard" […]