Could someone please explain to me what being "buzzed" is.

I'm not riding today, but I feel good about the reason why. A bunch of us from work are going to work on a Habitat for Humanity house and I have to haul a cooler full of bottled water. I can't put it on my bike so I must drive the EFB (evil fuel burner).
Oh well, tomorrow is Saturday so I can go for a ride because I want to not because I have to.