A funny video has emerged of a woman's hilarious reaction when she finds out she is going to be a grandmother for the third time.

The footage, captured on March 22 in Mesa, AZ, USA, captures the moment the woman opens a gift - given by her daughter as a thanks for the help at her wedding - and sees an ultrasound picture of her new grandson.

Then, she starts screaming wildly and gets together with her daughter in an emotional hug.

"We told Grammy & Papa that we wanted to give them a special gift for helping with our wedding. What they didn't know is that the gift was a new grandchild on the way,'' the filmer later wrote online.

''Let's just say Grammy got a little excited after opening the gift box and seeing the ultrasound picture.''

''It was such a great moment that we'll never forget,'' he added.

Shortly after my wife and I got married we traveled with her sister and her 2 kids to Arizona for Spring Training baseball. My in-laws (Grammy & Papa) travel to Arizona every year from California and stay for a month. The day after we arrived we told Grammy & Papa that we wanted to give them a special gift for helping with our wedding. What they didn't know is that the gift was a new grandchild on the way. Let's just say Grammy got a little excited after opening the gift box and seeing the ultrasound picture. We wife even made shirts for our niece and newphew to wear after the announcement that said "Big Cousin"! It was such a great moment that we'll never forget!