Chiefed in Japan

After the pool last night I drove to the local supermarket for some late-night snack and pre-emptive grocery shopping. I bought:

1) some breaded fried chicken, packaged in a clear plastic box.
2) some sea weed salad, packaged in a similar clear plastic box.
3) leeks, wrapped together in rubber band.
4) celery, also rapped together in rubber band.
5) a 2-liter bottle of sports drink.

I went to the counter, and the cashier put everything except for the sports drink in 4 separate plastic bags, and then put the four smaller plastic bags into one big one. They always do this at Japanese supermarkets. As far as I can tell, the rule is that unpackaged produce, cooked foods, raw meat, and cleaning supplies always go into their own separate plastic bag before being put together with the rest of your purchased grocery. Is it to prevent leakage? Fear of contamination? Whatever the reason, it always bugs the hell out of me.

So, I did what any environmentally-conscious consumer would do, I pulled everything out of their small plastic bags and just lumped it all in the one big one with the carrying handle, and said to the cash register,

"そのままのほうがいいですよ！”(sonomama no hou ga ii desu yo)
I think what I said was, "Just the way it was is okay with me!"
I looked it up afterwards, and I think actually said, "It should be the way it was." or "The way it was was better."

The cashier was a guy in his late twenties--which I thought was strange because the supermarket cashiers are rarely male. He replied,

"わかった、たいしょう。”(wakatta, taishou)
I thought he meant "I understand, it's okay." But I was a little bit confused as to why I heard taishou and not daijoubu, which meant "it's okay."

I looked it up in the dictionary:

大将　たいしょう　taishou
n. a general(army), an admiral(navy), a boss.

Enter that one into the chiefings database.