When someone asks you to switch seats on a plane so they can sit with a family member or friend, do so. -- And if you see a separated twosome sitting near you, offer to switch seats with one of them.
Delete junk e-mail and chain letters on the spot. -- Don't forward them to family and friends. Everyone gets too many e-mails already-help lighten the load.
If you have to curse, choose silly words over offensive ones. -- Choose words like "snicker doodles," "snap," "crummy buttons," or "fiddle dee dee." You're not likely to offend anyone in hearing distance, and it may help lighten the moment.
Get off your cell phone while conducting transactions. -- The girl selling you a sweater at the Gap doesn't want to wait for you to finish your conversation about what to have for dinner so she can ask for your credit card.
Dads: Carry the diaper bag, push the stroller, and look after your kids as often as your wife does.