"Want peace of mind? Here's a piece of mine"
Shit works on so many levels
-He's using two well known opposite phrases
-You've got the play on peace/piece
-The play on mine/mind
-He flips the question on it's head but the wordplay is still incorporated.
The fact he's managed to use the two phrases with two bits of wordplay, which work as a double meaning, and add a load to the song, in such a short line is astonishing.
This is the kinda wordplay I love from Em, not the pointless, un-clever ones on Recovery.