Pat,
Absolutely I would laugh off a DNF, but mainly because the notion of a DNF is pretty foreign to me. I don't play competitively anymore and I don't even post scores for handicap purposes. As such, every time I tee it up is a pretty casual affair with friends. There may be small wagers on the line (e.g. loser buys dinner, drinks, etc.), but no friend of mine would make me stay down on a beach swatting away at the ball like some modern-day Sisyphus just so I could fill out a scorecard.