Imagine if the entire humanity worked towards discovering time travelling.
We would get it in no time!
What is a time travelling vacuum cleaner called?
The Time Travelling Soldier
When a soldier came to the clinic where I work for an MRI, he was put into the machine by an attractive, young technician. Sometime later, when the examination was over, he was helped out of the machine by a far older woman. The soldier remarked, “How long was I in there for?”
Time travelling punchlines.
What is the best way to ruin a joke?