When I was in that terrible "pre-teen" stage, I hated brushing my teeth--that's probably why I have a mouth absolutely full of fillings! My mom would send me off to brush my teeth before bed and I would make a show of doing it--turn the water on, wet the brush, let the water run while I "brushed," tap the brush a few times on the edge of the sink -- done! But not!
I think Darby does something similar sometimes, although, of course, not over brushing her teeth.
Sometimes I walk her out to the grass and say "Go pee-pee" and she walks out a ways, makes a mini-squat, then comes running back -- done! But, not!
Makes me laugh when it happens.
This photo has nothing to do with pretending to do something you don't want/need to do, but I have always liked the white "flag" on the end of her tail.