Back story #1
Dude spends a LOT of time listening to the radio. And even when he isn’t, I’m pretty sure there’s a constant stream of music playing through his head. Sometimes he’ll randomly (or at least it appears random to us) sing a line of a song. Sometimes, it’s not so random.
Back story #2
One night at dinner, my mother was discussing the impending snow storm.
Mom: They’re saying it could turn into an ice storm! And ice is worse than snow!
Dude, not even looking up while trying to stab a piece of chicken: Ice ice baby.