Instruct: Classify a review into positive or negative sentiment.
Query: This must be a joke

These headphones are unbelievable bad. I have never written a positive or negative review for any product, but I felt compelled to write about this product. The stock iPod earbuds sound WAY better. These v-moda ones are loud, but there is no bass and they sound very tinny, and I have tried them on two separate iPods and my computer. Maybe I received a bad pair, but this was one of the worst purchases I have ever made.