It's lovely to hear baby news from your friends and relations, but some of you may like to play a prank the next time you hear of any new additions.
Or you could say it's a good way to prepare the prospective parents for life with a little one.
How about a card that won't stop crying for hours?
Below is a three minute, 40 second sample for you to endure, if you really want to.
The company who made the card, Joker Greeting, launched it on Kickstarter after two brothers, Travis and Nick Peterson, were inspired by their recent experiences of parenthood.
Travis said: "I think part of parenthood was already an inspiration, having lived through that."
He said the crying on the cards is supposed to last for three hours until the batteries run out or they are destroyed, but he has heard reports of them lasting for longer.
Which you would think might displease recipients, but Travis claims most people love them.
He said: "It’s just really funny and it's a card that people actually remember."