When one takes a dump in a ocean or lake.
Marty was swimming in the ocean after eating lunch at Taco Bell and decided to pull his trunks down to let out a sea pickle.
by Dan Band April 07, 2006
A turd that is left in the toilet when some ignoramous doesn't flush.
I walked into the john to be greeted by someone's sea pickle in the bowl!
by Larryfun August 11, 2005
A human turd floating freely in any body of water. More specifically, the ocean.
While catching some waves, I made contact with a sea pickle
by Nick T. April 05, 2006
When you take a dump in the ocean.
It's late in your summer house and everyone is getting ready i.e. the bathrooms are full so you run out to the ocean to take a sea pickle.
by Katherine Escobar April 05, 2006