Holding up your middle finger; also known as "flipping the bird", and giving someone "the finger". Mainly used by large-assed women driving Ford Windstar vans, with large bangs.
"Did you see that haggard redneck lady in the rusted-out soccer mom van? She really gave that bitch in the Taurus the ol' WalMart Wave!"
by Rocco the other white meat. January 18, 2017
Get the walmart wavemug.