Luke having a good rummage in his granny's attic (Not a euphemism) when he discovers an old lamp
He decides to give the lamp a really good polish (again Not a euphemism) and out pops a genie
'I am the genie of the lamp and I will grant you a single wish so choose wisely my son.'
Luke has a bit of a think and says 'I wish that I don't die a virgin!'
And that's how Luke became Immortal