Sylvester Stallon, Bruce Willis

Sylvester Stallone is not shying away from expressing how he really feels about Bruce Willis.

After Willis dropped out of Expendables 3, Stallone took to twitter, writing, "WILLIS OUT... HARRISON FORD IN !!!! GREAT NEWS !!!!! Been waiting years for this!!!!"

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He then added, "GREEDY AND LAZY ...... A SURE FORMULA FOR CAREER FAILURE."

Stallone and Willis co-starred in the first two Expendables films along with Arnold Schwarzenegger, Jason Statham and Mickey Rourke. The third installment, which will include Mel Gibson, Kellan Lutz, Jackie Chan, Wesley Snipes and Milla Jovovich, begins production this month. 

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Willis also recently made headlines for a cringe-worthy interview he did with a British reporter about Red 2, during which Willis seem disinterested an insulted the reporter's question. 

Do you think Stallone was too harsh?