(Cover) - EN Showbiz - Bruce Willis co-star played a prank on him by leaving a live alligator in his trailer.

Bruce stars in new action movie Red alongside Mary-Louise Parker, Dame Helen Mirren and Morgan Freeman. Mary-Louise was determined to test Bruces reputation as a Hollywood tough guy and decided to try to scare him by placing the reptile in his trailer on the New Orleans film set.

Mary-Louise persuaded actor John Malkovich to take Bruce out for lunch, while she put the alligator in a cooler and hid in his shower to wait for his reaction.

However, Mary Louise was disappointed to discover the animal was so small it failed to frighten her rugged co-star.

It was more like a bloated lizard," Mary-Louise told the New York Daily News.

In fact rather than shock Bruce with her stunt, the 55-year-old action hero was thrilled she had gone to so much effort for him.

"He actually was kind of touched that I went through the trouble," the Weeds actress laughingly added. (C) Cover Media