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1.
When your taking a girls panties/knickers down and your not quite sure if she will let you take them all the way off but then she arches her back so to raise her ass up,to give you the all clear
Keith: How did it go with jennifer last night?

Barry: As i went to take her knickers off wasnt sure if she would let me take them right off but then she did the arch

Keith: I miss the arch
by Mackem13 March 21, 2011
 
2.
McDonalds; Mickey D's
Joe: Where can I get some nasty food served to me by a 30 year old retarded guy?

Juan Pablo: the arches

Joe: You're right, let's go.

by funkyfingers22 June 25, 2008