2 definitions by @Real_KDeVante

The act of becoming extremely unmotivated in your appearance after smoking lots of weed. This usually includes but is not limited to growing your hair out long and having a full beard.
Jimmy: "damn bro why you look like that"

Hernandez: "man i've been smoking so much I've just been Going Caveman"

Jimmy: " -__- Cut your fucking hair"
by @Real_KDeVante January 19, 2012
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When a female that was sexy in high school becomes ugly or unattractive after graduation.

When you go to college and come home and the girls that were attractive in high school are ugly as fuck
Man I just saw Sarah at Walmart, and that bitch is suffering from After High School Syndrome.
by @Real_KDeVante January 8, 2012
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