Bruce Willis is furious his "yippe-ki-yay, motherf**ker" catchphrase has been cut from his new "Die Hard" movie.

The 52-year-old actor - who reprises his role as maverick cop John McClane in the fourth installment of the action franchise - is unhappy with the studio's decision to give "Live Free Or Die Hard' a PG-13 rating because it restricted his swearing.