The porn video tag "mumgotsecrets" can be interpreted as a combination of three words: 'mum', 'got', and 'secrets'. In this context, the tag is referring to a scene or content involving a mother who has secrets, possibly related to her sexual desires, past experiences, or other explicit aspects. These secrets may come to light or be explored in the video, leading to intimate and risqué situations that cater to the adult audience's fantasies and interests.