1 definition by opfreakygurl

an expression used after you have heard some strange, weird, or new news.

also used after someone says or does something really weird.
for example:

"that girl starting doing the worm in math class!"

"op! are you kidding?!"

or

"ed asked me to prom..."
"op! no he did not!"
by opfreakygurl September 13, 2009
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