National "THE NINE" DAY

Have one of your closest friends draw all over your arm(s)

If your birthday falls on the holiday your closest friend gets to hit you as well
December 17th is the holiday

You: hey do you know what day it is
One of closest friends: no what day is it
You: national "THE NINE" DAY Where you are allowed to draw all over my arm(s)
One of closest friends: it is I've never heard of it but ok