Jake Gyllenhaal just gave the most intense performance of his career, and we're not talking about "Nightcrawler."
On Wednesday, Gyllenhaal joined Jimmy Fallon for a game of Water War, and things got out of hand real fast. There were crazy mind games, cards were used to cover up nipples and, at one point, the actor yelled out, "This is for my family," before splashing water in Fallon's face.
"The Tonight Show Starring Jimmy Fallon" airs weeknights at 11:35 p.m. ET on NBC.