drop your trousers

drop (one's) trousers

To lower one's pants, typically in a public setting. I know you're drunk, but you can't drop your trousers out here! The doctor asked me to drop my trousers so he could give me the shot.
See also: drop, trouser
Farlex Dictionary of Idioms.

drop your trousers

deliberately let your trousers fall down, especially in a public place.
See also: drop, trouser
Farlex Partner Idioms Dictionary
See also:
  • drop (one's) trousers
  • drop trou
  • drop it
  • Drop it!
  • drop in
  • drop in(to) (something)
  • drop over
  • fond of a drop
  • mic
  • drop the mic
References in periodicals archive
"If you think you can give us a leg up then drop your trousers at Holy Trinity Church Hall on Sunday, March 11, between 2pm and 4.30pm."
Running short of trousers
In a Bangkok dry cleaner's: "Drop your trousers here for best results."
Carol Vorderman's Internet Column: www.our.favourite