Time to potty train???

Le

My son (17months) is pulling off his pants and ripping his diaper off. I’m being told that it is a sign of being ready to potty train. Pfffft yeah ok. I am giving it a shot. I bought a little potty but he’s not even tall enough to sit on it himself. I guess it’s not a bad idea to start getting him use to the idea. We shall see!