When this dad feels weird about a prank he played on his daughter for her birthday, he asks Reddit:
My daughter’s 18th birthday was yesterday. On the eve of her birthday, my son(who is 16) told me about his idea to smash cake and whipped cream on his big sister’s face when she woke up.
I thought this would be funny and make my daughter laugh first thing on her birthday, so I agreed to do it with my son. I would say my biggest regret here is not telling my wife know about the plan.