knock the dew off the lily

knock the dew off the lily

euphemism Of a man, to urinate. Excuse me a moment, I just need to go knock the dew off the lily.
See also: dew, knock, lily, off
Farlex Dictionary of Idioms.

knock the dew off the lily

and shake the dew off the lily
phr. [for a male] to urinate, especially first thing in the morning. (The dew is urine.) He’s up and into the bathroom, knocking the dew off the lily long before I even get my eyes open. I gotta go shake the dew off the lily before I explode.
See also: dew, knock, lily, off
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • shake the dew off the lily
  • knock (one's) block off
  • knock block off
  • knock someone's block off
  • I'll knock your block/head off!
  • knock about with (one)
  • block
  • buck off
  • knock (someone) down with a feather, to
  • don't knock it