TEHRAN — Prime Minister Benjamin Netanyahu of Israel tried to take his campaign against the Iranian leadership to Iran’s young population last week, saying that if they were truly free, they would be able to wear jeans, listen to Western music and participate in free elections.

The problem is that Iranians do wear jeans and manage to listen to whatever music they want to listen to, just like people almost anywhere, except maybe in North Korea.

That is to say, Mr. Netanyahu’s effort at outreach backfired, as Twitter lit up Sunday with retorts.

“Netanyahu, here are my #Jeans and #Western music,” wrote a user named Sallar, posting a picture of his jeans and his iPad showing a pop album cover, and adding an insult to the prime minister’s intelligence.

A user with the handle mohhzg wrote, “Netanyahu, I’m wearing jeans like many old & young people in #Iran.”