Megan Fox was left "fuming" after overhearing baby daddy Machine Gun Kelly receive a compliment regarding his parenting.

RadarOnline.com can reveal exactly why Transformers star was livid with the remark, after the rocker dished on what it's like co-parenting with the actress. Article continues below advertisement

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He said: "Someone the other day was like, 'You're such a good dad,' because I was just holding the baby.

"So (Megan) was fuming. Yo dude, like, nah nah nah nah nah! She is the one. I just play the guitar and hope and pray that the baby is happy."

MGK went on to call himself a glorified "music teacher" but said being a dad again is "awesome."

He explained: "I want to detract any congrats to me, and just mov

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