Several years ago we became good friends with this Jewish guy named Randy.  Easter came along and we were making plans for the holiday.  We sort of absent mindedly asked what he had planned and then realized it wouldn't be a Holiday he or his wife (she is Buddhist) would celebrate.  He, however, corrected us. 

"Sure!  Jews celebrate Easter." 
"You do???" 
"Yeah, sure we do."
"How do you celebrate?"
"We hold hands and dance around in a circle singing, 'We killed him!  We killed him!'"

My kind of humor.