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Giant Gaystacks: Offensive term for a big (fat or muscular) butch looking guy who wouldn't at first appear to be gay. Until he walked, talked or munched someones wand!

1). A Giant Gaystack would probably look quite butch but walk with a gay bum wiggle and camp posterior!

2). An exceptionally well built Muscle Mary!

Imagine Giant Haystacks if he was a pillow biter!
Man, look at the fat hommebag, he is such a Giant Gaystacks!

I bet he lets other men bite off his Dingleberries!
by Slamming Rum Joseph August 15, 2005
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