Instruct: Classify Amazon reviews into positive or negative sentiment
Query: They shocked my ear

They fit fine, the sound was fine. But during my 3rd use, on the treadmill, they shocked my right ear. I thought it was my imagination so I kept going... and it did it again. I have since searched "shocked" in these reviews and guess what... I'm not the only one!! A definite DON'T BUY.