The Urinate Command is a Health And Wellness Instruction which requires the House Boy to relax his abdominal muscles sufficiently to release his urine stream and empty his bladder, and is usually given with the preceding word “Go” to signal permission to use the nearest toilet or another appropriate facility, but may be given with the supplemental command “Now” to indicate that the release of urine stream is expected to be immediate and hands-free.

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Rule 262-M — Urinate Command 
Classified: Verbal and Non-Verbal Commands
See also: Letter "P" Command Rule 337P