What does bog sonar mean?

bog sonar meaning in Urban Dictionary

Whilst inside cubicle when someone else walks in to the bog you pay attention intently (switch on your bog sonar) to ascertain what they are as much as, in order to prepare the power of your after that squeeze, amount of groan throughout the squeeze, ferocity of wipe and subsequent exit from trap in order to avoid revealing you to ultimately the defecation interloper.