WATCH: Pink’s Newborn Son Rocks Adele-Inspired Onesie

The black-and-white phrase is obviously a play on the title of the hit film Straight Outta Compton and marked the tot’s six-week milestone.

Happy Monday

A photo posted by P!NK (@pink) on

The singer and her husband, Carey Hart, are already parents to 5-year-old daughter, Willow, and welcomed little Jameson the day after Christmas.

The 37-year-old musician also marked six weeks by kicking off a new fitness regime.

“Day 1!!!!!!!! Lets do this @msjeanettejenkins (week 6 post baby and I haven't lost ANY WEIGHT YET!!!!),” she captioned a photo with her trainer. “Yaye me!!!!! I'm normal!