why should i..

... brush my teeth? i don't understand it. At first i really liked it, but now it just irritates me. mom and dad are trying all sorts of tricks ... they're brushing my dog puppet ciro's teeth.. they let me brush his teeth too, they've tried in front of the mirror, different brushes etc.. but they don't fool me. i don't fancy doing it so i just lock my lips tight so they can't get in. i know i have to do it cos it's good for my teeth apparently.. but i just don't want to.