Dustin Johnson Insinuates Sex With Paulina Gretzky Caused Back Injury

No, Dustin Johnson didn’t hurt his back earlier this year swinging a club — instead, he strongly insinuated Wednesday it was a different kind of stroke that caused the injury.

Johnson was out in New York getting ready for the PGA Championship at Oak Hill Country Club when he was peppered with a few questions about the muscle pull that yanked him from the Saudi International golf tournament back in February.

The 38-year-old former Masters champ didn’t explain fully what caused the problem … but he sure hinted it had something to do with fooling around with his wife, Paulina Gretzky.

Check out video of the exchange with a reporter … when the media member asked the LIV star if he had gotten hurt playing golf or “lifting up” one of his children — Johnson broke out a huge, wry grin.

“Yeah, lifting up a kid,” he said, stifling a laugh. “Just a bigger kid.”

The remark left the room full of journalists in stitches … and the ear-to-ear smile that Johnson continued to wear didn’t require any further follow-ups.

Of course, Johnson could’ve been talking about something completely different … but both he and Paulina have had all day to clarify the comments — yet the two have remained tight-lipped.