nature’s call

nature's call

euphemism The urge or need to urinate or defecate. Jim is off answering nature's call—he should be back any minute. Is anyone else feeling nature's call before we get back in the car?
See also: call
Farlex Dictionary of Idioms.

nature’s call

and call of nature
n. the feeling of a need to go to the toilet. I think I feel nature’s call coming on.
See also: call
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • nature's call
  • a call of nature
  • call of nature
  • nature
  • answer the call of nature
  • Can I have (one) call you?
  • Could I have call you?
  • marker
  • call in (one's) marker
  • call my service