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The french fry that is designated to scrap off the mayonnaise on your sandwich of any type. Can be used more loosely to describe a fry used to remove any condiment from a sandwich.
Friend: What'd you get from McDonalds?

Me: Medium Fry and a McChicken. I asked for no mayo but yet it was on there!

Friend: Did you eat it any way?

Me: Yeah, only after I used a mayo fry to get that nasty substance off of my sandwich!
by GangSTARito June 08, 2009
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