Short for: Other People's Plates. Used in describing someone who only likes to eat what food other people have on their plate or have ordered at a restaurant.
Courtney ordered the chicken milanese, but I know she'll just eat off OPP.

Alex: You want a bite of my salad?

Ashley: Yea, I'm down with OPP!
by Cojoface March 18, 2010
Over Protective Parent

A Mother or Father who is a bit over cautious of their child's safety.
Walking them to high school everyday.

Making them wear a crash helmet and knee pads when they go out in Heelys.

Taking them out shopping, up to the corner shop.

Blocking Facebook and msn from the internet (all your classmates Facebook pages could actually be a mob of stalkers and rapists who are trying to kidnap you)

"Hey Nathan, want to walk me back to my house after school?"

"I can't, my mum's picking me up."

"Call her and tell her you're walking home with me."

"She says I have to have at least one responsible adult around at all times, especially out in the street."

by JM LN December 26, 2010
You guys are morons.
It mean Open Pussy Policy.
As in a type of relationship.
opp u no me
by opp xpert June 22, 2010
Other People's Property. A woman who is already married, so you can't (legally or morally) fuck her.
Mrs. B. is married to a wealthy doctor. I'd sure like to get down with OPP.
by GuidoPosse69 January 31, 2005
Other people's privates
Are you down with the OPP. Yeah, you know me.
by Anonymous February 20, 2003
Acronym for Orleans Parish Prison. In new orleans, LA
Man i had to sit in opp for 3 months on that murder charge!
by Chi-Chi January 29, 2004
Other Peoples' Property
by presto March 21, 2003

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