From Longman Dictionary of Contemporary English(just) for the hell of it(just) for the hell of itspoken not politeENJOY/LIKE DOING something for no serious reason, or only for funThey shot people just for the hell of it. → hell
Examples from the Corpus
(just) for the hell of it• For the hell of it l do an extra set of bun-twisters on my back, a perennial crowd-pleaser.• Why do so many people breed just for the hell of it?• Slanging matches with Craddock just for the hell of it.• A lot of rich kids are turning to crime just for the hell of it.• We used to go out every Saturday night and get drunk, just for the hell of it.• I steal things I can't eat, just for the hell of it.• He decided to walk down to the promontory by way of the market, just for the hell of it.• For this interview, talking just for the hell of it, he was immeasurably more relaxed.• William Mulholland came to Los Angeles more or less for the hell of it.• He didn't really strike her as a particularly nosy person, just wanting to know things for the hell of it. 