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1.
-to get high
-the song "walking with a ghost" by tegan and sara can be interpreted as being high
"yo wanna come over tonight and walk with a ghost?"
"i was walking with a ghost last night and i bugged out"
by aryy August 24, 2007
 
2.
A song written by Tegan and Sara, but that Jack White plays way better with more kickass guitar and better, less annoying vocals.
Dude #1: dude, did you listen to "walking with a ghost" yet?

Dude #2: Yeah, Jack White rocks!
by veryirishdude September 14, 2010