Step one. Say your sorry. Even if what you did was totally unintentional. Those are usually a bit easier to get over. But still it takes some time for the victim (s) to get over it.
Step two. Try and help where you can. Sometimes you just have to keep your mouth shut and take your punishment.
Step three. Say your sorry, again.
Step four. Make sure you take the ball point pen out of your pocket before your wife does a huge load of laundry. Especially after a busy weekend.