Time machine jokes

My time machine broke, so I took it to the time machine repairman.

He just walked up to it, kicked it and said “they sure don’t make them like they will do soon.”

I remember when I was a little boy, an old man suddenly stepped out of a time machine and punched me for no reason.

So I've spent all my life working on a time machine, and now that I've built it, I'm going back in time to when he was a little boy, and I'm going to punch him and see how he likes it!