Don't enquire how much a present cost. Ever. And don't ask Aunt if she kept the receipt for the present she just gave you

Don't spend the whole day texting. Speak with your family. Irrespective of how difficult that is. If it becomes too much, pretend to sleep. On Christmas Day, this is acceptable. Texting isn't one

Don't bring your phone to the dinner table, and if it rings, do not even answer it because  If you forgot to turn it off.

You should not Instagram your lunch. No one really interested to see it. We're eating our own and have a great suggestion of what it appears to look like

 Don't complain about your present on Social Media. Or your loved ones. Simply do not.

 Don't try to justify a gift. There is no justification. Just pour more punch.

You know, the one where you put empty wine bottles in his arms because you find it amusing. That's the one. Do not share it on social media. You and Uncle will be sorry.

Don't overspend on wrapping paper for the kids' presents. They don't care.

Finally, refrain from playing rap versions of Jingle Bells. Simply do not.