Extension Cord jokes

A jumper cable walked into a bar. The bartender said, "I'll serve you, but don't start anything!"

What is burned dark and glued to the wall?

A bad electrician.

You want some dead batteries? They're free of charge.

I asked my rigger buddy if he could tie me up later, he said, "I'm a frayed knot."

How did Stephen Hawking die?

He rolled too far away from the outlet on the wall.