What did the hairdresser say to the power line?
"Want a power cut?"
Listen up, buttercup. This joke is all about a pun! A "power cut" is what happens when the electricity goes out, but it's also what a hairdresser does when they cut your hair. Hairdresser is offering a power line a haircut but uses wordplay to create humor. Bet you didn't catch that, did you?