What do you call an overweight alien?
An extra cholesterol.
How do you organise a welcome party for an alien race?
You planet.
What do you call an alien spaceship that goes from planet to planet to planet? A UF-hoe.
What do you call an alien with three eyes?
An aliiien.
What time do spacemen get up? Alien in the morning.
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Have you heard the one about the spaceship that came to Earth?
Never mind its over your head.
What is a lightyear?
The same as a regular year, but with less calories.
How do you get a baby alien to sleep?
Rocket.
How did the aliens hurt the farmer?
They trod on his corn.
Where do aliens park their flying saucers?
At a parking meteor.
Why don't aliens get hungry after being blasted into space?
Because they've just had a big launch.
What do you call an alien spaceship that's leaking water?
A crying saucer.
What's E.T. short for?
Because he's got little legs.
What do aliens prefer to drink?
Gravi-tea.
Have you heard the one about the spaceship that came to Earth?
Never mind its over your head.
What will you do if you come across a green alien? I’ll simply wait until it’s ripe.
What do you call a wizard aboard a spacecraft?
A flying sorcerer.
How will you save yourself if you come across an aggressive alien? Give him some space.