On The Road: My Roommate The Philistine.

(I produce a blue harmonica in C Major from my pocket)
Roommate: What the hell is that!?
Me: ...A harmonica?
RM: Why?
Me: I'm going to play it on the ride home...
RM: but dude I wanted to listen to music on the ride home!
Me: But this is music... (Plays a few notes)
RM: That's not music that's just sound!