Explosive Poo
Does your baby (still in diapers) push (toilet time) with such force that her poo comes out the sides of her diaper? How many times did you get your clothes wet / soiled like that?
My oldest had an issue with that, but luckily he didn't take long to potty train. He didn't start until it was potty training time. When he first went poo in the potty, he got a lot of praise of course. So the next few times he kept thinking that going poo was the key to getting the praise, and not necessarily in the potty. He would push like crazy when he started to feel it whether on the toilet or in his diaper. It took a while to get him to stop, but it created a few diapers bombs.