Ladies what do you think of guys who like to show off their muscles? Guys why is it douchey thing to do so?

I see guys I know posting pics of themselves on Facebook in front of a mirror with no shirt on. Most guys give them grief and some girls do too. I've just always wondered why its such a douchey thing. All my friends wear tank tops to school or around town, but when I wear one its like all hell breaks loose and I get nasty stares and people give me sh*t for it and so I don't wear anything revealing at school. Like most of the time I wear loose fitting shirts now. I mean its perfectly OK for me to walk on the beach with no shirt, but anywhere else and I get sh*t for it while most of my friends can do whatever they want. I know a lot of douche bags grease up their muscles and sh*t and their total meatheads like some of the f***wads on jersey shore. But why is it so bad for a muscular guy to walk around showing his muscles off?
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Sorry I accidentally posted this in the sex section.
Ladies what do you think of guys who like to show off their muscles? Guys why is it douchey thing to do so?
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