Design failure: mean and tricky jug

Not only is this design inefficient, wasting most of the jug’s capacity; it is unhygienic – a remarkable achievement for a storage vessel made of glass. The teats are, ironically, bacteria traps because they are difficult to clean. It is a good example of an unnecessary fix. In any case the device would be more ‘playful’ (which really means ‘mean and tricky’ most of the time) and more functionally convergent if milk came from the teats and not a conventional spout.