Freddie Prinze Jr. stopped by The Tonight Show on Tuesday and reminded everyone why he was once their biggest crush in the late '90s. The dad of two [1] was promoting his new cookbook, Back to the Kitchen, but while chatting with host Jimmy Fallon [2], he steered the conversation to a hilarious and drunken night he spent in London with pal Chris Klein [3] when they were in their 20s. Freddie explained that after having a few too many drinks, the two friends, who costarred in 2007's New York City Serenade, got into an elevator with a British man who questioned their American accents. Long story short, Chris followed the man and ended up throwing him in a river in the middle of Winter. We have a feeling that his American Pie character, Chris"Oz" Ostreicher, would have done the exact same thing.