Funny Turtle 

When a man's penis goes from being erect to soft very quickly and continuously so it resembles a turtle sticking its head in and out of its shell continuously.

Girl 1: OMG Tina I put my finger in John's butt last night and he got a Funny Turtle!
Girl 2: He should just make up his mind as to whether or not he likes it.

Funny Turtle by YAHDOEHADLWA April 18, 2016

funky turtle 

Ducking your head in and out of a turtle neck in a way that can be interpreted as foreskin.

Look at that man doing the funky turtle

funky turtle by Mindyourshit October 24, 2022

Turtles fanny pack

Digging up your testicles from your pants and letting them hang on top of your belt.

This dude just came out of nowhere rocking a Turtles fanny pack.

Turtles fanny pack by Cavepear July 7, 2017