Hollywood actor Paul Rudd has gone viral for showing off a hilarious skill.

Appearing on webs series Hot Ones, Rudd was asked to demonstrate a trick he does to prank his friends.

Using his hand, Rudd can render any innocent photo immediately NSFW.

"I learned my pinky, at the right angle, makes a great scrotum," he explained.

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A clip of this segment made it onto Twitter and people loved Rudd's juvenile skill.

You can watch the full episode on YouTube:

Paul Rudd's latest Netflix show, Living With Yourself, was released on October 18.