How I Met Your Mother’s Neil Patrick Harris, who plays Barney in the hit comedy TV show, has joked that he is lining up the possibility of starring in a pro gay marriage movie. Neil, who is openly gay, joshed that it initially started out as a joke with his How I Met Your Mother cast mates.

Harris explained, "It all started with a joke. We were on break on the set of How I Met Your Mother, and Jason Segel was Google Imaging me to find that one shot of me on a unicorn. Instead, he happened upon a picture of me holding a double-barrel shotgun. I don't even remember when...anyway, he showed it to Allyson Hannigan, and she said, 'Hey, it's a homo with a shotgun!' I guess she had just seen the trailer for [the Rutger Hauer film] Hobo with a Shotgun, and thought it was a cute riff."

He then continued, "Next thing I know, somebody from Dimension [Films] is on the phone, and we're getting $20 million in funding from the State of New York to develop the picture. Amazing," Neil jested, "I won't say the phrase 'Squeal like a pig!' is in the script. But then again, I won't say it isn't, either. It's going to be a trip."

How amazing would Homo With a Shotgun actually be, I for one would pay to see it. Neil Patrick Harris returns to reprise his role as womaniser Barney in the hit comedy TV show How I Met Your Mother, when it returns with its seventh season on CBS from September 19. Details of his pro gay marriage movie have yet to be revealed. Watch this space.