Definitions by Captain boathouse

freshwater jellyfish

Ejaculation as a result of a nearby friend having intercourse in a body of fresh water, with or without you knowing.

Hey bro I just got stung by your freshwater jellyfish.

While enjoying an afternoon swim in Lake Shasta, out of no where this freshwater jellyfish snuck up on me and stung me right in the face.

freshwater jellyfish by Captain boathouse July 26, 2012