Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Oh boy!

Yikes, I just dumped a ton of cash into this chair after sitting in it locally. At the store, I thought all was well. Now after sitting in it for a while, I realize it is not comfortable at all. The back rest is impossible to adjust to me. It feels like I must always lean back in the chair. There is zero upper back support when typing at a keyboard. Plus the stupid chair feels like it was designed for someone who weighs 300 lbs. Big mistake.