Lol, this is adorable. In my research class, the teacher would bring her little 4 year old son. He sat on my lap one day, being all cute, and OUT OF THE BLUE he did exactly what this emote is. I was like...whatttt in the world.
Congrats on the DD, this is adorable and you deserve it.
I'm not cat--I dislike cats actually (allergies; they always know you have them!)--but I always do this to my boyfriend. He always tells me, "You're so weird, Katie;" but then he'll scratch my head and nuzzle right back! Ha!