"Three Dead Bodies" joke

Three dead bodies turn up at the mortuary, all with very big
smiles on their faces. The coroner calls the police to show
them what's happened.
A Detective Inspector is sent and is taken straight to the first body.
"Englishman, 60, died of heart failure whilst making love to his mistress.
Hence the enormous smile Inspector", says the Coroner.
The DI is taken to the second dead man. "Scotsman, 25, won a
thousand pounds on the lottery, spent it all on whisky. Died of
alcohol poisoning, hence the smile."
" Nothing unusual here", thinks the DI, and asks to be shown
the last body. "Ah," says the coroner, "this is the most unusual one.
Irishman, 30, struck by lightning."
"Why is he smiling then?" inquires the Inspector. To which the coroner
replies: "Thought he was having his picture taken,".