Short Man's Syndrome, according to the Urban Dictionary (a highly authoritative online research source, comparable to Wikipedia even!) is when an "angry male of below average height feels it necessary to act out in an attempt to gain respect and recognition from others and compensate for his abnormally short stature."
Although I wouldn't say that I "act out", or try to compensate for my unimpressive height (5'7), I think I have a mild form of SMS. When I compare myself with other guys I take notice of their height first. If they are taller than me and have a decent looking face, they win. They are the winner. Even if I believe I'm more attractive than said person, it doesn't matter. Their height makes up for whatever their face lacks.
I'm not sure of exactly when this way of thinking started though I specifically remember a remark made to me by this girl I knew in middle school. She said something along the lines of "Oh Steele, you're such a cutie. If only you were a little taller I would date you." It got to me (obviously), so now I have this stigma about my height.
Most of the time I can let it go and accept my stature for what it is, but once in a while something will spark my SMS . A comment on a recent OhNoTheyDidn't post triggered this flare up. The post contained photos of a certain young male celebrity (who is 5'10 according to his IMBD page), and this comment was made, "How old is he? I hope he gets bigger, bcoz it's such a waste when a cute guy is short." Seeing as how several other commenters agreed with this sentiment, perhaps my reasoning isn't completely ridiculous. There was only one exception, out of the four replies to that comment someone wrote "I disagree. I love short guys. Oh well, more for me!" They even had an icon that read "Pocket-sized men for the win!", although I hope no one has ever referred to me as pocket-sized. So maybe there's hope for me after all.
I've been sitting on this post for a couple days now, not sure if I should let people in on this small insecurity that I have, but there you have it.