Wiping my penis instead of flicking it after a piss.
I live with two other guys. I often find myself wiping down the toilet or near the toilet most of the time to rid of visibly large piss droplets from the person before me. Sometimes I even step on to these droplets by accident. Because of this I've gotten into the habit of wiping my dick. This makes me feel better although... in the back of my mind I know there are tiny bits of splash back everywhere when pissing into toilets anyway.