Swimming Gecko

(1) A gecko (lizard) that has found its way into a body of water and has begun the action of moving within said body of water.

(2) A green poop that floats.

(1) Person 1: Look there's a lizard in the water!

Person 2: Oh, that's a swimming gecko!

(2) Person 1: Dude I gotta lay off the pistachios...

Person 2: Another swimming gecko?

Person 1: Yeah...