look up any word, like sparkle pony:
 
1.
Pai Nai is the Thai for "Where are you going?" (literally "go where?")
Pai Nai?
Pai kin bia.
Pai duay.
by Ste March 31, 2005
 
2.
"Where at?" in some language or other. I think it's Korean.
"Yo man, pai nai?"
"Dude, wtf?"
by Squeed February 24, 2005