Obviously there’s being high, cranked, amped, baked, stoned, fried, toasted (though I think of that one as drunk), blazed…
think in terms of all kinds of drugs… how many slang terms are there for being inebriated?
Loved up
tweaked
geeked
rolling
tripping (balls)
candy flipping
hippy flipping
drunk
buzzed
whacked out
hopped up (e.g. on goofballs)
glazed
popping
wasted
blitzed
gone
sauced
blotto
Faded
Ripped
Monged.
Battered.
Munted.
Spangled.
Twatted.
Bollocksed.
Sh*t-faced.
Arseholed.
Squiffy.
Buzzing.
Off one’s face.
Off one’s tits.
Rushing.
At uni I found you can drop almost any noun into a drug/booze statement and it’s understood…
“Last night we drank at least 3 bottles of tequila between us… honestly, I was completely trousered.”
fixed
nodding out
adjusted
blown away
peaking
out of it
over the rainbow
spaced
Plenty of terms for drunk, of course, like “three sheets to the wind”, “sozzled”, “stinko”, etc.
fucked up
Hammered
Knee-walking
If we’re going to include “buzzed,” then we have to include the stronger form:
tipsy
“monged”? I always heard that was when you dug up a female corpse, freshly interred, and…
Avital Ronell, in Crack Wars had some good ones, but I think there are as many in this thread.
No love for “crunk,” or “tight”?
Zooted
Blasted
Floatin’
Joey P took a bunch of the ones I wanted to post.
Oh, yes, I forgot about “hippy flipping.” I always heard “candy flipping” as a one-off on “candy striping” (taking acid and E at the same time, IIRC). Never heard of the hippy flip, though – sounds like a jazz tune written in the 1950s.
Stupid
chasin’ the dragon
ridin’ the horse
And also:
Good stuff 
My favorite: lit. Also the name of a band.