Driftwood is a partial erection, or a half flaccid/half erect phallus. This is commonly acquired while one is interrupted during sexual activity. It can be confused with a "Broner," however, it is not the same.
I was about to bang this chick last night but then I got Driftwood and couldn't. At least she gave me a blowchub.
The guy, or guys, that you meet and have sex with while you're at the beach. They, and their "wood", drift in and out of your life for the day/night, the week, the summer - however long you're in a beach environment.
HeyCutie K, let's to the beach next week and pick up some shells and driftwood.
When a man starts spending less time with the bros: this is generally caused by his hope of "getting some" with his new girlfriend.
Mark: "Hey man, have you seen John lately since he started dating that new chick?"
Paul: "No i haven't... i think he may have become a victim of The Driftwood Effect."