trip on

trip on (someone or something)

1. Literally, to bump into someone or something with one's foot and stumble or fall as a result. He tripped on the step running up the stairs and fell face first on the hallway. She tiptoed out of the room, trying not to trip on anyone as she left.
2. slang To experience the psychotropic effects, especially audio or visual hallucination, of some drug. Don't listen to him—he's been tripping on acid for the last three hours. We spent the weekend tripping on mushrooms while we went on hikes so we could better appreciate nature's beauty.
See also: on, trip
Farlex Dictionary of Idioms.

trip on someone or something

 and trip over someone or something
to stumble on someone or something. The place was filled with sleeping people. I tripped over perfect strangers on my way to the door. I tripped on a brick and fell into the wall.
See also: on, trip
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

trip on

v.
1. To stumble or fall on account of hitting or catching the foot on something: I tripped on the curb and fell down on the sidewalk.
2. Slang To be under the influence of some hallucinogenic drug: He tried to write an essay while he was tripping on acid, and it made no sense at all.
See also: on, trip
The American Heritage® Dictionary of Phrasal Verbs.
See also:
  • trip on (someone or something)
  • trip over (someone or something)
  • head first
  • headfirst
  • base over apex
  • knock into
  • knock into (someone or something)
  • make a false step
  • false step
  • lose (one's) footing
References in classic literature
Everybody sat on the upper deck, on benches, under an awning; everybody talked, laughed, and exclaimed at the wonder scenery; in truth, a trip on that lake is almost the perfection of pleasuring.
Tramp Abroad
The 6f is likely to take some getting and that is a major negative for a horse who has finished well beaten in two starts over the trip on turf - both on decent ground.
Call It On to build on promise of his York reappearance