Refers to the intention of a man to have sex with a woman. From Cole Porter's song "Too Darn Hot". Lyric in part below.

According to the Kinsey report
Every average man you know
Likes his lovey-dovey to court
When the temperature is low
But when the thermometer goes right up
And the weather is sizzling hot
Mister Man, with the plan, is not
Current ads for Viagra refer to "A man with a plan"
by notso April 7, 2014
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When a man makes a plan but doesn’t get any details.
Friend 1: I’m excited to see you tonight!

Friend 2: What should we bring, Joe did all the Man Planning and I know nothing about the party!
by Meekerella July 7, 2018
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The Broke Man Diet Plan is when you diet buy not eating because you cant afford to fukin eat. This is along one of the most successful diet plans. Only beggars will fail this one.
Woman: Damn! How you lose that weight?

Man: I went broke lol! Its that Broke Man Diet Plan
by Mr. Rugby March 8, 2014
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the longest palindrome thats not retarded.
guy-"holy crap a man a plan a canal panama is the longest palindrome thats not retarded!"
by sooperdooper1234abcdefg March 9, 2009
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I hate this bar because you always have to wait in line for the bathroom. That's the major disadvantage of a one man floor plan.
by xenosapien September 13, 2013
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An event or idea where men get together and watch a sporting event on a large television (mainly HD) while consuming large amounts of alcohol and eating large amounts of meat, pizza, or nachos.
Guy #1: Me and the guys are gonna watch the game at my house.

Guy #2: Want me to bring beer?

Guy #1: Sounds like a Man Plan.
by BigB34 April 17, 2010
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