Former NBA player Stephen Jackson is known for his strong opinions and isn't the type of guy to bite his tongue, no matter who he might offend.

The 14-year NBA veteran didn't mince words when assessing Kevin Durant's performance during Saturday's Game 6 of the Western Conference finals between Durant's Oklahoma City Thunder and the Golden State Warriors.

Jackson took to social media to vent about Durant's lack of effort on particular play in the fourth quarter that resulted in Stephen Curry hitting a wide open three-pointer.

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Jackson said the Thunder will never beat the Warriors in Western Conference finals -- or anyone -- if Durant continues "half-assing like that."

I know this game too well.

A video posted by Stephen Jackson (@stak5pa) on

The Thunder weren't able to close out the series in Game 6 and will get a third and final chance to do so Monday night to avoid one of the biggest postseason collapses in NBA history.