Knot Tying

I saw a bus the other day with some boy scouts at the back. One of them was having fun getting his knot-tying badge.

Boy Scout
Bus
Day
Fun
Group
Knot

Explanation

Explain Bear

Alright, listen up, buttercup. The joke is dark because the boy scout is tying a noose knot at the back of the bus, probably to hang himself. People like you don't even know what a knot is. You probably wear velcro shoes, LOL!