Some one who is always high to the point they lack good judgement.They may also be delutional and has touble keeping focused.Maybe considered stupid high or burtout.
friend: Dude whats 5x5?
Stoner: 10
Friend: lol.homie what color is the sky?
Stoner: umm is it white?
Friend: Dude your piped...lol
"Piped" (adj.)
Is a word to stand as a synonym for such other words like high and stoned. Piped can be used on any level of 'highness' and can also be used to describe other situations.