I'd like a bodybag

My husband and I are Dutch and we were travelling in the United States. My English is not bad, I majored in English literature in college. My husband on the other hand knows most English from American television shows and movies.
On one of our first evenings, we were having a typical American steak dinner in a restaurant, and there was no way we were able to eat everything on our plates, it was just too much.
I told my husband that I've seen on television that it is customary in America to ask for a doggybag. In this case the restaurant staff packs the rest of your dinner so you can take it home with you and finish it later. I said I could imagine why, since they serve so much.
As soon as I said it, my husband waved at the waitress, obviously thinking he could look like an experienced U.S.-traveller.
Pity he asked for a bodybag instead of a doggybag. The face of the waitress was priceless though...