Ah, stop.

Have you ever been to a wedding? Of course you have, they're fairly popular occasions. If you for some reason haven't though, listen up, because there are a few things that guests can generally safely assume will happen during the ceremony. Usually, someone will get married. Some of the time, a choir will sing a lot of nice songs of the bride and groom's choosing and it'll all be very lovely and stuff. There might also be a ring-bearer in the form of a small child or perhaps a dog (if you're lucky). However, there is one thing that people tend to not be expecting to happen during a wedding ceremony, and that's for the father-of-the-bride to lead a flash mob right in the middle of the church. It's understandable then that bride Lisa McGrath was fairly shocked and delighted when her dad started a bit of a sing-song in St.Bridgets Church Killeshandra, Co.Cavan right before she was about to be wed. He was armed with a guitar and everything. Fair play to him, like. Once Lisa's dad started things off, a load of the other guests followed suit, eventually making their way up to the altar to surround the bride and her groom, David Kellett. Not your average tying of the knot, to be honest. You can watch the full video here.