Jason Williams thinks he knows why Klay Thompson is strugglin' on the basketball court this season -- MEG THEE STALLION !

That's what the former NBA star said on the "Hoopin’ N Hollerin'" podcast on Wednesday, just a week after the Dallas Mavericks announced they were benching the four-time NBA champion, who is averaging just 7.4 points per game, while shooting 26.7% from the three. Getty

The podcast crew, including Patrick Beverly , mentioned Thompson's new relationship with Meg, one of the hottest stars in all of music ... when Williams, a 12-year NBA vet, chimed in.

"I'm from West Virginia, man, I've been taught a lot from old folks, old white folks," Williams said, "It only takes one p**** to drag a battleship across the desert. That's how powerful it is."

"Kla

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