Ear butter 

When a voice is so smooth it is described as butter (but for your ears and not your mouth because it's sound and not food)

"damn dude, that guys voice is ear butter"

Ear butter by Jeff Dunham October 26, 2017

ear butter 

A copious amount of earwax

I can't hear you cuz I gots the ear butter, yo.

ear butter by cybertoothhellcat November 12, 2007