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Jay Z Just Revealed Why the Twins Are Named Rumi and Sir

His explanation is perfect

As for his new baby boy, Jay Z said, “And Sir was just like… man, come out the gate and he just carries himself like that. Just came out like ‘Sir.'” His explanation is perfect, because it reveals that Sir’s name is so grounded in the baby’s personality.

The rapper also discussed Blue Ivy’s freestyle on 4:44. Jay Z revealed how her rap came about, and said, “So I start playing the beat… And she went and got the headphones and climbed on the little stool and then she just started rapping. The pockets she was catching… I was like, ‘Oh shit!'”

Clearly, Jay Z is an incredibly proud father, especially as he revealed, “I have it on my phone, five minutes. Five minutes of her doing that.” Blue Ivy is most definitely a star in the making.

Listen to Jay Z’s interview in full on the Rap Radar podcast over on Tidal now.

This article originally appeared on elle.com