<human>: Summarize the given text in a few sentences.

So... I was recently visiting home and, as I was making a grilled cheese, I commented to my dad the cheese wasn't melting like it usually does. I was wondering if Kraft had changed their recipe or something then decided it must be because I recently had been using Kraft with 2% milk... 

My dad started laughing and informed me that for the past 10 years, he has been buying generic cheese and putting it in the Kraft cheese wrapper because he didn't believe my mom, sister, and I could really tell a difference between generic and Kraft cheese. Apparently he also had been slipping the peanut butter label of the Jiffy peanut butter too! I was the first one to notice and hadn't noticed when I actually lived here.

He isn't cheap, he just thought we were making up that we could tell a difference when it came to peanut butter and Kraft, which I still maintain I can.
<bot>: My dad has been putting generic cheese in the Kraft cheese wrapper for a decade in order to prove the women in my family can't really tell a difference between Kraft & generic American Cheese.