on acid

be on acid

To be under the influence of lysergic acid diethylamide (LSD), a powerful psychedelic drug commonly known as "acid." A lot of my friends like being on acid, but it just makes me feel really tense and paranoid.
See also: acid, on

on acid

Under the influence of lysergic acid diethylamide (LSD), a powerful psychedelic drug commonly known as "acid." The man was reportedly on acid when claimed he could fly and tried to jump off the building.
See also: acid, on
Farlex Dictionary of Idioms.
See also:
  • be on acid
  • drop acid
  • mellow yellow
  • LSD
  • bad trip
  • on a trip
  • trip out
  • tripped out
  • Uncle Sid
  • cid