tell us your time travel joke

[DoctorZ]

here is mine
guys get to heaven get ( guy is a time traveller)

gate keeper ask: how did you die

time traveller: do you know how the dinosaur died

gate keeper: no i do not

Time traveller: i do

 

[Lennie5]

never say Tempus fugit to a time traveller, he is likely to throw his alarm clock at you