Just don't introduce her to Gwen Stefani. She defines the earworm, and not in a good way. There have been times I have instructed my kid to immediately start playing his rap offerings if she comes on the radio. Heh. I'm starting to like them, so it's good the kid is leaving soon, don't want to interfere with his "cool" factor. I never told him that when he would morosely go to his "safe room" and blast music, I actually enjoyed both his morose absence, and the music he was playing. It seemed best.
Anna