when a man wants time in the company of only himself or other members of the male species.
Key man time activities are games console playing, beer drinking, eyebrow plucking, chest waxing, porn watching, todger inspection, mirror posing, sport watching, pube counting, pile poking and many more.
Man time can also be used as a cover story for general sleazebag behaviour and cheating.
Here's my credit card, why don't you go and buy yourself something nice whilst I get a bit of man time in.
Hey won't your girlfriend wonder where you are? no, she thinks I'm having man time, she won't suspect a thing!