Just a few that come to mind. Be careful when buying Christmas Card , I once in a hurry bought my wife a card saying " Have a lovely Christmas Granny " she is now my ex wife. Kissing the girlfriend or wifes Mother full on the lips , she might slip her tongue in. A simple peck on both cheeks should do the job. Of course if she is a total MILF the rule above is waivered. There must be more.