To set the stage, during Anchorman 2, Will Ferrell’s Ron Burgundy suffers a head injury that causes him to become temporarily blind. Unable to read the news and becoming depressed, he isolates himself in a lighthouse and is one day visited by his trusty news cohorts: Paul Rudd’s Brian Fantana, David Koechner’s Champ Kind and Steve Carrell’s Brick Tamland. Cue Rudd’s inability to keep a straight face, as he recently recalled (again, this is NSFW):
Article source: https://www.cinemablend.com/news/2553871/the-nsfw-anchorman-2-scene-paul-rudd-almost-ruined-by-laughing