"Tripping face," I don't know, I always made the GD "He's Gone" association also. I know it goes back, I first heard it used at the Dead shows in Greensboro, '91 (I like language, slang & usually recall first hearing a word). Some kids from Rochester that we camped next said it over and over and over again, with a "tripping your face off" thrown in on occasion.
"Rolling," first heard in ~'93, from some tour folks who stayed with us for a bit. That one made immediate sense to me so far as describing the ebb & flow of MDMA sensation. The first time I tried it a friend of mine had gotten 1g of powder straight from Texas. Quartered it and put in glasses of water, he and I and two girls. We were sitting on the floor in the girls' dorm room, and when it came on what I felt at first was a tremendous rush of pure speed-feeling. High voltage, total anxiety, beading sweat etc., and getting stronger every second. This was a kind of blind-date scenario for me, although I had seen the girl and found her quite attractive. Certainly not someone I wanted to go to pieces around (I'd never done amphetamines or speed of any kind at the time, possibly why I felt it so strongly-- ?)
I made a quick decision to get out of there-- no sense bringing everyone else down-- and rose to leave, stammering some excuse. Soon as I was up on my feet--whooosh-- the tension broke like a giant wave, and the sensation rolled over me from head to toe. :D
Of course there's the lovey-dovey aspect also-- "to roll" has for centuries been used in a sexual way-- roll in the clover, roll in the hay, and later rock'n'roll, old jazz slang for fucking. Which, we didn't, that night, the girl and I. We did a good bit of
weeping, though, and moved in together like three days later 8)
The other couple dated five or six years, got married, and are married still.
