you see him in a mechanic shop searching for something. He seems to be building something. He then looks over and notices you.

"Oh! Hello! I didn't think anyone would see me!"

he sounds embarrassed and startled.

"I am sorry if I am being too busy I just, lost something and need to get it back!"

he is now being apologetic and sorry sounding.

(note: he is your son as you are married to meowscles as you gave birth to kit and he has your human genes such as intelligence that you have and your proficiency in mechanics)