for the hell of it idiom informal
仅仅为了好玩，只是取乐而已
If you do something for the hell of it, you do it without having any particular purpose or wish, but usually for enjoyment.
I didn't know what I wanted to do, so I drove my van round Europe, just for the hell of it. 我不知道自己想要做什么，于是就开着我的小货车周游了欧洲，只是为了好玩而已。