All Christmas hols my dd (home from Uni) has accused me of pinching her expensive shampoo and conditioner (never did, used my cheapo rubbish).
DD has gone back to Uni today (driven by that well known taxi firm, mums taxi). She has left her expensive shampoo and conditioner in the bathroom.
So AIBU to use the expensive stuff (as I have already been tried and found guilty of using the stuff). Will blame the dog/cat/guinea pig/goldfish/husband of using it.