This is a recent story, and belongs in the epic hall of fame of a close colleague of mine.
During the worship, they started to pray following the song "There is a day"
The prayer was heart felt and gathered pace as he went on. Thank you for our promise in you. Thank you for the hope we have in you. Thank you that all hurt and pain will cease, and we will see You in all your glory.
Then the gaffe...
"And we will be clothed in immorality"
An awkward silence. On he continued.
"No, that is not the word because that is wrong. We will be clothed in immortality"
You could not script it. Absolutely, jaw achingly hilarious!