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A complete and full erection of the male penis

As opposed to a "Half Mast" or "Semi" when the male is slightly aroused or drunk, and unable to achieve "Full Mast"
"Yasmine baulked as Franks Full mast loomed into view"

"Now at full mast , Greg was emabarsed and could not stand up to get off at his desired bus sop"
by Ben L 64 November 06, 2006
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Aug 6 Word of the Day
Used often in the business world, this incredibly versatile phrase can be literally translated as "fuck it."
The client changed the deadline to today? Well, it is what it is.
by A. Danish November 27, 2007
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2
a fully erect, hard penis and also a mens health clinic that treats erectile dysfunction with shockwaves
As soon as she touched him, boing, it sprang to full mast.
by TomBanana January 31, 2019
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3
A mammoth man who walks with an awkward limp. Also, 1/2 mast for a smaller version and tits mast edition for one with man titties.
Damn, did you see full mast. He just walked by that little midget asian kid. He has to be atleast triple his size.
by john john November 30, 2004
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4
Man fuck... I saw Erika’s thicc ass, and I went full mast, shit, could’ve skeet my meat right there and then.
by kenjatime May 28, 2020
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