short guys with big heads and ray guns from the Mars

A country, state, city, town etc. where the majority are immigrants, legal or otherwise.

your Mexican neighbor

Hispanic astronaut

some freaky ass jellyfish from the moon

A person who doesn't sleep with a pillow

Used for emphasis, it strengthens the adjective directly before it. It can also be used as a replacement for “hell” or “heck”.

A member of the huge fanbase of the german pop-rock band Tokio Hotel.

See Aliens (find the definition that has to do with TH)

Adjective. Something strange and unfamiliar or inexplicable.