Waving only the pinky at another driver that has pissed you off, thus insinuating that his penis is the size of your pinky. Also good for greasy-looking kids who have their music on too loud.

A portmanteau of carpe diem, a Latin phrase that means “Seize the Day!” and DM, which stands for Direct Messages. This word means seizing the day via DMs.

Waving your pinky at a driver you see whom you would like to pull over to have sex with. If they wave back, go find a nice spot and do your thing.

When you are getting a blowjob and the girl/guy sticks a pinky in your ass.

the awkward wave done using your pinky because you are talking on the phone and don't actually want to aknowledge them.

The barely-visible pinky wave is the only way to acknowledge an acquaintance or thank another driver while simultaneously driving and using a hand-held mobile telephone.