CHARLES Barkley has left television viewers sickened after a "disgusting" act on a live NBA broadcast.

The 60-year-old NBA legend was on Tuesday's edition of TNT's Inside the NBA — alongside Shaquille O'Neal, Ernie Johnson and Kenny Smith.

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After the Los Angeles Lakers Game 1 victory over the Golden State Warriors, the TNT camera crew managed to get a shot of Barkley licking his phone.

That caused Barkley to defend the act, saying: "That's how I clean my phone."

Smith wasn't buying it and let Barkley have it, saying: "Dude, what are you doing man?"

NBA Twitter decided to clown the former Phoenix Suns Hall of Famer.

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One tweeted: "I bet his phone smells like hot dog water."

Another said: "Chuck gotta stop that nasty habit. Just carry a microfiber cloth."

And a third wrote: "Chuck be doing the most on national television."

However, Barkley got the last laugh after the Tuesday night game.

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He was the only colleague to pick the LA Lakers over the Warriors.

The Lakers were led by Anthony Davis, who scored 30 points and totaled 23 rebounds, five assists and four blocked shots.

But on April 11, the 60-year-old Barkley lost a billion-dollar bet with O'Neal before a Tuesday NBA play-in game.

Barkley lost the bet and the game result led to O'Neal gloating after the game.

Shaq held his pinky finger against his face to represent the billion dollars he was receiving from Barkley.