a humphrey - A guy who’s holding onto a joint like it’s the last piece of

A guy who’s holding onto a joint like it’s the last piece of pizza, while everyone else is waiting for their turn to smoke.

My dad is a humphrey. He holds onto a joint for 10 minutes like it’s a treasure.

That guy at the party is a humphrey. He’s been holding the bong for 20 minutes.

My brother is a humphrey. He’s holding the pipe like it’s the last cigarette in the world.