Jingle Bells

I was shopping at my local supermarket today and they were playing Christmas music over the system. A very corny, American version of Jingle Bells came on. Sleighs, snow, etc... I thought, "Man, this is so fucking out of place"! Then it really started to irritate me. I though, "If they don't turn this shit off I could easily go postal in here and kill everyone". Is this a normal reaction or should I seek help?