India, March 28 -- Brian Austin Green fired back at Machine Gun Kelly after the singer rebuked him for inquiring about Megan Fox's pregnancy. The 51-year-old took to his Instagram Story on Thursday to expose a message from the Rap Devil crooner, revealing the latter's harsh response to him asking when the Subservience actress' baby is due.

"Stop asking when our child is gonna be born. you the FEDS," Kelly said in his message to Green. "Quit calling TMZ and focus on that apology you owe me for speaking on my name in public," he added, as can be seen in the screenshot shared by the Beverly Hills star.

In the message, Kelly further slammed Green, writing, "You chose the wrong one to f**k with mr child actor. Go back to cereal commercials."...