Sylvester takes a dig at Bruce Willis on Twitter

Sylvester Stallone

Sylvester Stallone took a dig at his 'Expendables' co-star Bruce Willis by calling him lazy.

The 'Rocky' star took to Twitter saying that being 'Greedy' and 'Lazy' was a sure formula for career failure, which was apparently hinted at Willis, Stuff.co.nz reported.

Stallone''s publicist had confirmed to the Huffington Post that the tweet was about Willis, but did not comment further.

The 67-year-old actor had earlier tweeted that Willis was being replaced by Harrison Ford in the upcoming 'Expendables' flick.