It makes me mad because I know FAT FAT guys who get laid. My cousin is 17 and gets laid by skinny hot chicks, and he's a fat slob.
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"I'm going to graduate with my Master's degree in athletic training, so that makes me smart". - This isn't what makes you smart. It makes you have a masters degree in athletic training, nothing more or nothing less.
"Below is a picture of how good looking I am." - No offense intended through saying this, and there is absolutely nothing bad about how you look, but talking like that gives of an arrogant attitude.
"SInce I'm 24 now, I'll just give up. I'll just wait for a girl to ask me out, since they don't mind out asking out fat and ugly guys anyway." - You're strongly presuming it's looks which solely dictate how females choose their partners. There's nothing wrong with being fat, or 'ugly'. There's so much more to attraction then looks, too.
Being 24 means nothing. You're barely an adult and have loads of years left. Keep trying and you'll get someone eventually.