A lesson in English

Today Justin gave me a lesson in English. I was talking to him online while I was at work when this conversation came up. Mind you it all started because Shibuya, one of my Japanese English Teachers who also sits next to me in our office, made a comment about some cookies I was eating. Everyday he takes interest in my lunch, and no matter what I am eating he always says "Mmm smells good." Meanwhile I think the exact opposite of that when he pulls out his lunch! I usually have to hold my breathe while he is eating, and most of the time he talks while he eats and food flies all over my desk! But as for him, I could be eating dog poop for all he knows and I'm sure he'd say the same thing "smells good!" Shibuya calls my peanut butter and jelly sandwiches "berry bread", thinks root beer is actually beer and thought the red sugar on top of the Valentines sugar cookies I brought was, in his words, "spicy pepper". Anyways, today he made a comment that taught me, the native English teacher, a lesson in English! Here is my conversation with Justin...

12:39:31 PM Kristen: shibuya saw my cookies and said "ooo everyday sweets take care of your waste"
12:39:39 PM Justin: ?
12:39:42 PM Justin: waste?
12:39:51 PM Justin: or weight
12:40:09 PM Kristen: waste
12:40:12 PM Justin: ?
12:40:20 PM Kristen: your waste
12:40:28 PM Kristen: you dont know what your waste is?
12:40:36 PM Kristen: like where your pants sit, on your waste
12:40:37 PM Justin: your poop?
12:40:42 PM Justin: waist
12:40:47 PM Kristen: oh hahah
12:40:49 PM Kristen: true