The act of turning something good into garbage (i.e a song, film, hobby, or even a person) through excessive use, coverage, or praise; similar to the Oasis song Wonderwall, which is a good song, but was played so much that people can't stand it.
-Guy 1:"Is that Mackelmore's thrift shop? Turn that shit off man."
-Guy 2:"What? Come on man this is a great song"
-Guy 2:"Yeah I know, but it's everywhere, I can't enjoy it anymore, they totally wonderwalled it".
-Guy 1:"Check out this new Robert Downey Jr. interview i found"
-Guy 2:"Nah man, can't hear anymore about him, the media's been wonderwalling him real hard.