Wood butt
A condition that friends tend to get when one needs a favor.
Particularly common in moving situations, or anything that will take a fair amount of time/effort.
Me: "Hey man, can I get a hand moving some furniture tonight? You don't still have Wood butt do you?"
Friend: "Wood butt? What's that?"
Me: "Can you help or not?"
Friend: "Well I would but..."
Me: "What the f, you still have it."