AP Photo/Matt Slocum

James Hinchcliffe wasn’t bashful about his unscheduled bathroom break, or about spilling the beans on other drivers.

The IndyCar driver admitted he had to go after being confined to his car during a 37-minute red flag at Barber Motorsports Park. He also related Carlos Munoz’s similar experience in Toronto a few years ago.

Hinchcliffe says the story was that Munoz “is sitting in the car just begging to be let out” during a red flag.

“He finally said, ‘Sorry, guys. I can’t hold it,’” he told NBC Sports. “They said, ‘You can’t get out.’

 “He pees in the seat. Not 30 seconds later, Race Control comes over the radio and says, ‘All right, drivers out. We’re done.’”

This time the cars were briefly sent back on track before another red flag where drivers were allowed out of their cars. That was too late for Hinchcliffe.

 “We got going again and my legs were shaking,” he said. “I had to go so bad. I was like, ‘I can’t drive a race car like this.’

“So under caution, it took me a full lap (to relieve himself). It was one of the least comfortable experiences of my entire life, but I can officially say I’ve joined the likes of Will Power and Dario Franchitti and others who have peed themselves in their suit.

“So, you’re talking to a man who just wet himself.”

Both Munoz and Franchitti let the quips flow in Twitter responses. Franchitti offered a playful "No comment."