It's summer, which means it's time to get outdoors. But when you're a celebrity, you bring the outdoors to you.

Cameron Diaz and Jimmy Fallon imported nature to the Tonight Show studios on Tuesday. The duo competed in an outrageous indoors kayak race that included rowing/wheeling themselves through the halls of 30 Rock while Josh Gad pelted them with (fake) salmon.

It was all fun and games until Fallon went overboard.