1. Someone in my building blasting Dueling Banjos (a.k.a. the theme from Deliverance) for no apparent reason. Not blasting anything else before or after it, just Dueling Banjos at building-shaking levels. WHY?!
2. A car horn that plays “La Cucaracha,” but plays the last note off key. I didn’t think anything could be more irritating than the “La Cucaracha” horn. Clearly, I was wrong.