Top Definition
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
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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