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2.
Achieved when one smokes so much chronic that they are as high as the ureteral vicinity of the Giraffa camelopardalis.
"Shit mein, I blazed so much dro, I was higher than giraffe pussy yesterday!"
by Martwamp December 10, 2007
 
1.
Sometimes abbreviated as "high as G.P.", this phrase can be used in general to describe anything that is very tall or high-positioned (physically). It is sometimes also used figuratively when describing being "high" (under the influence of a substance, i.e. marijuana).
Man, I'm not getting up on that ladder. That thing is as high as G.P.

Dude, how much of that sh*t did you smoke. **I don't know man, but I'm higher than giraffe pussy...**
by LMSeattle May 25, 2010