Extra Terrestrial or E.T for short is the name for an Alien, that is not from this planet.
If you mean slang as in internet slang, then it means "Certified Old Fart".
an extra-terrestrial, an alien
YAF means in internet slang your a f*ck
SOS or soz as it is more commonly used is the internet slang for sorry
E.T. is an abbreviation for extra-terrestrial.
In internet slang it usually means "No strings attached."
disconnected
it means *am*
MOO is internet slang for "My Own Opinion"
Love And Kisses
Not right now.
NTH stands for nothing in internet slang.