Melissa Warren broke out laughing after her husband-to-be stumbled at a word during their marital vows.  Andrew Engstrom uttered the word "waffle-y" instead of "lawfully."

Melissa's reaction at her groom's mistake has since become a YouTube sensation.  The video shows the ceremony with church guests sitting silently on pews as the pastor tells Andrew to "place the ring on Melissa's hand and repeat after me."

The seriousness of the event is disrupted when Andrew is asked by the pastor to repeat "to be my  lawfully wedded wife."  The waffle-y word makes Melissa and the guests burst into laughter.

Andrew then looks at the pastor and says, "I've been scared of this all my life."