A time traveller.
Knock knock.
Who’s there?
We love puns, silly memes, and dad jokes. They're pundermentally puntastic.
Bartender: “Sorry, we don’t serve faster-than-light particles here.”
A tachyon walks Into a bar.
I subscribed to “Time Travel” magazine today. My first issue arrives last week.
Time travel classes: Starts 12th of August 1915.