Turns out Shay Bradley wanted to give his family one last laugh to remember him by.
A video posted on Facebook by his daughter, Andrea Bradley, showed how mourners in Bohernabreena Cemetery gathered at the open grave, which contained Mr Bradley's coffin.
In the clip, recorded before his death, his voice can be heard saying "Hello?"
"Let me out. Where the f**k am I?" Where the **** am I? They then heard, "Let me out, it's dark in here!" and "Is that the priest I can hear?".
Tears soon turned to laughter as Bradley, an Irish Defence Forces veteran, could be heard "knocking" from inside the coffin. This is Shay, I'm in the box.
The clip finishes with Mr Bradley singing lyrics from a Neil Diamond song: "Hello again... hello".
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The recording leaves Bradley's loved ones in splits, as he says "Let me out!"
Shay Bradley's daughter Andrea and her siblings granted his final wish by playing a recording of his voice coming from his coffin as it was lowered.
So much so, his dying wish was to pull a prank on all of them at his own funeral.
Jonathan told the BBC that his dad was "a larger than life character who always wanted to make people laugh". "He was some man for one man. Love you forever Poppabear", before describing the moment as 'Shay's last laugh'".
She "feels so proud and privileged to have been called his granddaughter".
She added: "Never a day went by he wasn't cracking a joke or have a smile on his face no matter the circumstances".