Do remember that it's just a date, not the rest of your life and it'll be over before you know it.
Do find something to make the date somewhat manageable — spark up a conversation you know will pique both your interests, try to enjoy the movie you're watching, or simply enjoy the meal you're eating.
Do maintain your composure and be polite.
Do share the details with a friend after the fact and find the humor in it!
Don't be rude or mean.
But don't feel bad about about leaving the date early if he's rude or mean to you.
Don't beat yourself up over a bad date — they happen to all of us.
Don't accept an offer to extend the date — politely say no to drinks or dessert so you can be on your merry way.