I have a 2 year old in 9 days. She has never shown interest in actually sitting on the potty. Today…

I have a 2 year old in 9 days. She has never shown interest in actually sitting on the potty. Today she takes me to the potty and wants to sit. I pull her pants and diaper down and the diaper was dry. She sits down and after maybe a full minute she starts peeing and starts cheering like crazy. Uhhh what? When did you become grown? Lol.