The Jets took some postgame blows following their first loss of the season -- and a few of those below-the-belt barbs appeared to come from the son of their tight ends coach.

Following their 24-17 loss to the Eagles at MetLife Stadium on Sunday, tweets posted on the account of Jimmie Johnson's son took aim at former starting quarterback Geno Smith and cornerback Antonio Cromartie.

In one post, Twitter user @JimmieJ82 posted a photo of Smith posing and smiling with a young fan with a caption that read: "Bum [expletive] Geno." He later took a shot at Cromartie, tweeting a photo of the corner standing next to two young kids after the game with the comment: "Antonio Cromartie with 2 of his 15 kids."

Cromartie immediately fired back, writing: "Y the [expletive] you worried about my family. If it wasn't for your dad you wouldn't be nothing in life @JimmieJ82. You better watch yourself son."

The account for @JimmieJ82 then tried to make amends before deleting his Twitter profile.

"@CRO31 apologize for the tweet man, I really didn't mean anything by it. Stupid tweet. I hope I get to apologize to you in person," he wrote.

Another tweet from @JimmieJ82 said, "Those tweets were really stupid on my part. Will apologize to both of them if I get the chance."

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The Jets have yet to confirm or deny the tweets in question came from Johnson's son.