I'm Cackling at Katherine Heigl's "Embarrassing Cheer" For Her Kids' First Day of School

Katherine Heigl celebrated her daughters' first day of school like any relatable mom would: by embarrassing the living daylights out of them. The 40-year-old actress and mother of three recently shared a hysterical Instagram video from her family's car ride to school, during which she belted out a musical sendoff that has us cackling. First she pointed the camera at her oldest child, Naleigh, singing, "My name is Nay Nay. I'm 10 years old. Today's my first day of middle school," which garnered a sweet smile and wave.

Her younger daughter, Adalaide, on the other hand, was clearly not having it, as she looked positively mortified in the back seat while Katherine sang, "My name is Addie. I'm 7 years old. When God made me, he broke the mold!" Seriously, her cringe and "WTF, Mom, it's too early for this" facial expression say it all.

When Katherine posted the video on both Instagram and Twitter, she captioned it: "First day of school for my gorgeous girls! Yeah...I came up with an embarrassing cheer this morning laying in bed and couldn't wait to sing it for them. The good news is...I did not do this in front of their classmates!" Honestly, I feel like I'm looking into a crystal ball and seeing myself pulling a move just like this as a mom in the future, and I'm not one bit mad about it.

Ahead, listen to Katherine's "embarrassing cheer" and witness her daughters' funny reactions, then keep reading to see more photos of the star's three kids, including her adorable 2-year-old son, Joshua.