Lazy waitress tips herself

After dining at a nice restaurant, lazy waitress decides to tip herself by not bringing the change back to the customer; disappearing from sight. Customer sensed there was something wrong with the waitress earlier on when she smelled something wafting ever so lightly from the waitress, but couldn't determine the actual scent until after. While driving home, customer realized the smell coming off the waitress was eau du lazy. Meanwhile, at the restaurant, other servers are a bit befuddled as to how the lazy waitress gets such great tips for ignoring her customers.