Your hairline recedes so far back that it defends your forehead.
Defensive Hairline
Categories
Explanation
Experiment
Explain Bear
Listen up, buttercup. This joke is sayin' your hairline is so far back it's like a wall protectin' your brain-case. It's funny 'cause hairlines ain't supposed to do that. I heard your hairline starts in the middle of your back, no cap.