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1.
A particular gay sub group defined by it's overdeveloped muscular physiques. As a group they can be exceptionally camp and effeminate.
Not applicable.
by irritant April 01, 2004
 
2.
Gay men obsessed with achieving the perfect body.
Muscle Marys often spend hours at the gym lifting weights to secure a good physique.
 
3.
Gay men, usually tanned, big (disco tits), stork legs who frequent discos and especially circuit parties without shirts, dazed on various drugs. Sort of what happens to a (twink) when they are no longer malnourished, are older than 23 and no-longer working in retail.
Everyone knows Kip and Blair as a fierce duo of muscle marys because of their flawless tans, huge pectorals, scrawny bird legs and asses that look like sad, sagging and tattered venetian blinds after a hurricane.
by rich1 May 15, 2006
 
4.
A muscle guy (both straight and gay) who knows and sings, often in private, all the words to Christian Aguilera's "Beautiful". Broadway musicals, Liza Minelli CDs and his steroid set-up are among the stuff he'll save in a fire.
Will is such a Muscle Mary he practices body building competition poses while lip synching Cher!
by aaron atlas February 21, 2005