A mum bob is a specific type of bob haircut identified by its characteristic shape and common perception.
Based on a description from June 21, 2016, a mum bob is defined as the longer-in-back, slightly–shorter-in-front bob. This hairstyle is often observed in settings like suburban malls. While the style is typically intended to appear sleek, the referenced description notes that it is inescapably frumpy.
In essence, it's a bob haircut with a subtle gradient, being longer towards the nape of the neck and shorter around the face, sometimes associated with a specific demographic and perceived negatively in terms of modern style.
