the origins of Christmas and how it makes Jehovah mad
Well I guess the celebrating of Christmas didn't make Jehovah mad enough for Jesus not to pick the WTS to be the FDS since they celebrated Christmas at Bethel at the alleged time he chose them to dispense "food at the proper time". They also acknowledged birthdays at that time.
I remember reading somewhere in their litterature about chess and it wasn't positive. They probably at one time even demonized playing cards!