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An acronym for the phrase "over your head." Usually in reference to a joke that "went over" someone's head.
Girl: There's a new tequila out, but it's $275/bottle
Guy: You would buy that
Girl: No.. but Christmas is coming up..
Guy: Yeah, I know
Girl: OYH
by christeenuh_b December 16, 2011
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2
An abbreviation for internet chat or message board expediency which is a contraction of the expression "Oh yeah, huh?;" similar to "Oh, really?" but generally meant to be dripping in sarcasm or mock attentiveness, especially when it appears repeatedly.
Chat transcript sample...

X: omg did i tell you robert is taking me to my chemical romance!?!?
Y: OYH
X: this is true love <3<3<3
Y: OYH OYH OYH
X: why r u so jealous bitch!
Y: OYH!
by DJ Rick January 16, 2007
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