I actually had a conversation about something similar with a friend awhile back. At my home games, we switch back and forth between two different colored decks with the BB shuffling the cards. Somewhere along the line, once we got to heads up, it became common for us to have the BB be the dealer - probably the mixup that OzExorcist and Jack Daniels alluded to. Of course when we play online and see heads up play on TV, the button/dealer is the small blind. Somehow, through the course of a few home games, we started to play things differently - it took us awhile to realize this too.