I gotta go potty

Day 16 of potty training:
I'm in my bedroom and hear Lukas yell out "I gotta go potty".
My first thought was, "Oh great, he's peed his pants."
So I go into the living room and kitchen and couldn't find him. I yell out to him to see where he's at and he says he's in the bathroom.
I walk in there and he's standing there on his step stool, shorts and underwear at his ankles, and holding his pee-pee, ready to go pee in the potty! He was waiting for someone to come in there and help him aim. LOL! so I go over, help him out and he pees.
I tried so hard to not crack up laughing at how cute it was to run into him like that, standing and ready to go. Such a little boy growing up!