Friction(jokes)!

(1)Ad!
An ad reads: You can rely on our product with your eyes closed!
Remark. You’ll be disillusioned the moment you’ll open your eyes.

(2)Means!
Father: He became a man of means overnight and took to excessive drinking. It brought an early end to his life!
Son: Dad, is it called ‘means justify the end’?

(3) Friction!
Son :Can’t we imagine a world where there’ll be no friction, there ‘ll
be only peace and amity?
Dad: Not possible, my son.
Son: Why not, dad ?
Dad: It’s friction that keeps us moving, my son.