WhatsApp has rolled out a message delete feature, y’all. They did so for those times where you potentially sent a message by mistake to a single person or a group.
In order to delete a message, simply press and hold on a message, then choose “Delete” or “Delete for everyone.” The only catch is that you have to do so within 7 minutes of it being sent, otherwise the record is permanent af. Oh, both you and the person you sent the message to have to be on the same version of WhatsApp in order for the deleted message to actually be deleted as well. Tell your friends to update.
Messaging deletion is rolling out now to iOS, Android, Windows Phone (lol), and desktop.