Whatever the time is when you wake up without setting your alarm. Generally between 9am and 11am
Guy1: Dude, you wanna go for a surf tomorow morning?
Guy2: Sure, what time?
Guy1: Dawn Patrol?
Guy2: Fuck that! Let's sleep in and head down to the beach at Gentleman's Hour.
by Maddog G October 25, 2008
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When a group of guys get together to smoke some cigars and sip at some scotch.
by Rylander_Chin February 5, 2014
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This meeting should only take a gentleman's hour.

He has been in the can for a gentelman's hour.
by Rodney Cobbletop December 13, 2010
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Having a session with an escort (hooker/prostitute) for 90 minutes instead of the usual 60 minutes.

Instead of seeing a lady for 60 minutes or 1 hour, seeing her for 90 minutes AKA Gentleman's Hour.
Booking: So would you like to book an appointment for an hour?

Client: I would prefer a Gentleman's hour today.

Booking: Sure, 90 minutes it is, sir.
by dirtydave39 May 1, 2010
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A time when one feels it most polite to retire to a quiet space for a half hour slumber.

A short rejuvenating snooze.
Corporal: "Sir, the Germans are advancing on our front lines as we speak"

Captain: "How long do we have, old boy?"

Corporal: "Just under an hour, sir"

Captain: "Not to worry, my good man, Ill still have time for A Gentleman's Half Hour in that case, before the battle"
by HonourandIntegrity November 29, 2019
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