The game, which took place on Thursday, involved Ferrell and Corden asking each other revealing or personal questions that if not answered honestly, would result in having to eat food such as cow tongue, ant yogurt and turkey testicles.
"So many memories as a child, gathering around the Christmas tree, eating turkey testicles," Ferrell joked.
Corden was forced to take a bite out of the cow tongue after he refused to answer which Carpool Karaoke guest's music he liked the least. Ferrell had to drink a raw clam shooter with Vienna sausage juice when he didn't answer who was the most difficult host he's worked with on Saturday Night Live.
Ferrell then took in some ant yogurt -- which the actor said tasted okay -- when he wouldn't answer which movie of his was his least favorite and then ate a fish eye after refusing to rank in order which actor he was most likely to work with again out of Mark Wahlberg, John C. Reilly and Mel Gibson.
Ferrell appeared on The Late Late Show to promote his new Sherlock Holmes comedy Holmes and Watson, which features the comedian as the iconic detective with Reilly as his partner John Watson. The film is set to arrive in theaters on Dec. 25.