Niall Horan did a semi-permanent tattoo of James Corden's face on his butt

James Corden became the butt of all jokes after Niall Horan had a semi-permanent tattoo of the comedian's face transferred onto his rear.
But Corden had the last laugh, as the inking took a good three weeks to wash off the One Direction star's posterior.
The only member of the British boyband to not have a tattoo, Niall was probably a bit worried this little joke would make a lasting impression.
-I.
source:dailymail