The Hollywood veteran joined young stars including Margot Robbie, Scott Eastwood, Jai Courtney, and Cara Delevingne in the upcoming movie about a government task force made up of hardened criminals.

At the close of filming, the actors wanted a tattoo to remind them of their time on set, and photographs later posted online showed Margot inking director David Ayer's arm, Jai with new artwork on his arm, and Cara getting a tattoo on her foot.

However, one Suicide Squad star does not have a permanent reminder of the movie - Will watched aghast at his younger co-stars' carefree antics, and made sure he was not around when it came to his turn to get inked.

He tells U.K. talk show host Graham Norton, "This is why 40 year olds shouldn't hang out with 20 year olds. This is what happens and I knew it was wrong but they didn't. Everybody tattooed one another. Margot Robbie wanted to do mine but I was absent that day! I do not have one."

And Will's fellow guest on the show, Ryan Reynolds, agreed with the Men in Black star that tattoos are usually a regrettable folly, saying, "I had (mine) done when I was 19 or 20 when I didn't know better. When you are that young you just go into a parlour, look at the wall and say, 'I'll take that one, oh and if you have time, I'll have those too.'"