Sneaky Banger 

When an artist who typically doesn't put out good music puts out a song that everyone seems to like. Tends to be used when the artist is disliked as well.

Tim: Did you hear the new Justin Bieber song?
Mark: Yeah, it was surprisingly good

Tim: Total sneaky banger

Sneaky Banger by theindianking August 1, 2016

Sneaky badger 

n. one who engages in overtly surreptitious activity, in a stealthy attempt to fulfill an underhand motive. Characterised by shifty eyes and excessive lurking.

I was sneaking around like some kind of...sneaky badger!

Sneaky badger by chlarah November 15, 2009

Sneak Badger 

Somebody who is very lucky, somehow managing to achieve what they wanted even though they looked like they were going to fuck up for sure.

Playing Tiger Woods.
(James) "Looks like im going to hit the green"
(Darren) "How the fuck did you manage that, you didn't even hit the ball straight you fucking sneak badger"

Sneak Badger by Darren Miller November 5, 2007