"you're the perfect definition of crazy" song from bams unholy union

the song is in one of the episodes right before they get married,
the song plays for a brief second, and it reads something like "well youre the perfect definition of crazy", and when the singer goes into the word crazy its in a scream.
i really wanna find out who sings this, and whats the name of the song?!?!?!
im dyingggggg.. i wanna know. haha

help mee.

Try...

Oh No Not Stereo - Roll
http://www.last.fm/music/Oh+No+Not+S...Roll?autostart


Don't ever tell me that everything's okay
When you're the perfect definition of crazy