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1. Usually an exclamatory and inquisitive phrase, while picking up on a girl. Usually in a smooth, sexually, sultry fashion that causes the girl to burst out saying "o'frill"?

2. Short for "oh, for real?!"
guy: sup mamas? you ever been donkey punched?
girl: no, whats that?
guy: *whispers definition in her ear*
girl: o'frill!? that's freaky!
by syc0m3talh34d June 17, 2009
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