Cameron And Tom Shift Into Top Gear

Cameron Diaz may have been looking nothing but sweet and lovely in Paris on Monday, but on Sunday night's episode of Top Gear, the Knight and Day actress let the obscenities rip!

If you don't know the British hit show, they regularly have celebs take to the track to race cheap cars in a segment called "Star in a Reasonably Priced Car," where they try to outdo one another and a mystery racer called "The Stig."

Cam did well, breaking the former record held by Harry Potter's Rupert Grint, but dropped plenty of F-Bombs along the way.

Then Tom came along, and the stunt driver that he is, narrowly avoided an accident to cross the finish line in record time -- beating his co-star by about a second!

We bet Katie and Suri had to watch with one eye shut!