The singer's fans also came to his defense, telling Hanzal to "grow up."
"Dude you are rude!" one user wrote. "He takes time out to take a photo, and that's how you act? gets some manners!"
Jonas later called off his fans, writing, "Hey y'all...it's all good. No need to spread the hate," before Hanzal chimed in -- and changed his caption.
"Everyone just calm the f-k down!!" Hanzel wrote. "It was just a joke and @nickjonas is cool with it. The caption has been changed..what's the fuss about?"
As for the new caption? That would be "One of the most humble superstars...MY MAN @nickjonas."