Shouting an obscenity at a fan last week will cost New York Jets quarterback Geno Smith.

The NFL fined him $12,000 on Friday after he dropped an f-bomb after last week’s 24-17 loss to the Detroit Lions at MetLife Stadium in East Rutherford, N.J.

Jets coach Rex Ryan said Friday that Smith also could face internal discipline.

“We’ll handle it the way we see appropriate,” Ryan said.

Smith said earlier in the week that he anticipated a fine from the league, but he was not available to speak with the media on Friday.

“I’m aware that my actions (were) not right, so I am subject to a fine,” Smith said earlier. “Whatever the ramifications will be, I will accept it.”

Smith and the Jets (1-3) are struggling. He has thrown more interceptions (five) than touchdown passes (four) in four games. And the schedule doesn’t get any easier with the next three games against the San Diego Chargers, Denver Broncos and New England Patriots.