Parents might want to keep their children away from watching Mannnincast. Kidding aside, ESPN2's alternate broadcast for Monday Night Football has been a huge hit among fans. The same fans who got treated to another entertaining iteration of the show hosted by Peyton Manning and his brother Eli on Monday, with former Seattle Seahawks running back Marshawn Lynch guesting.

Lynch is a colorful character and he did not disappoint showing that off during the broadcast, as he casually dropped an f-bomb during one point of the Seahawks' game against the visiting New Orleans Saints, per TMZ Sports.

Late in the first quarter of the Seahawks' tilt with the Saints … Lynch was watching a play when Seattle snapped the ball unexpectedly.

“Oh,” Marshawn said. “What the f***?!”

It was really a no biggie, except that the profanity reached a national audience, thus forcing Peyton to hilariously apologize for the language of the Seahawks great.

“I want to thank Marshawn Lynch,” he said. “Not as wild about the language. I want to apologize for some of the language. It's not what we're trying to do on this show.”

Lynch may have had more f-bombs dropped off the air after seeing the Seahawks lose to the Saints, 13-10.

In any case, Lynch is a legend.