Shitty Musician for teenage girls, well known for being inferior to bands such as Green Day, Blink 182 and the Foo Fighters.
It is well known that John Mayer would lose in a fight against Billie Joe Armstrong as Billie Joe Armstrong does not suck balls like John Mayer.
Also used to describe animal leavings.
My cat did a HUGE John Mayer on my Green Day CD's, now it's dead.
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