I used to buy a crapload of groceries once a month at a Safeway about eight blocks away from where I lived, and have to carry them in my hand 3 or 4 bags per hand slowly... I did so early in the morning, 2 am or so, for various reasons.
Occasionally I would be offered help to carry part of the load with me, either by someone who knew me or someone who didn't know me -- either by someone with a car or someone with just the two feet. One day, someone offered to carry half the load, and I welcomed the help whole-heartedly.
He started humming: "Psycho Killer Qu'est-ce que c'est? Fa fa fa fa fa fa fa fa far far better Run run run run run run run away"
So I say, "Hey! Cool! Talking Heads. My favourite band."
"The song's always running through my head. I'm always walking home at this time after visiting my friend with his band, and they practice the song."