For the Giggles 

Doing something that's hilarious just for the giggles.

Leslie sees something insanely hilarious that Ben posted on FB

Leslie: LOL that was really funny. Someone's gonna kill you for posting that photo.

Ben: It's all for the giggles!

For the Giggles by BShigure January 25, 2011

For The Giggles 

A phrase that is used an excuse when all other excuses fail

Bruce: "Let's go see that new movie"
Wayne: "Why? It's supposed to be crap"
Bruce: "For the giggles"

George: "I killed a guy. You know, for the giggles"

For The Giggles by jjpaddy January 9, 2014

Just for the giggles 

Just beacause, Yolo bitches. If your doing something just for the giggles you doing it just for the fucks of it. As long as you don't die fuck it.

Jump of the cliff just for the giggles

Just for the giggles by schoolboy07 September 11, 2019