Bad manner as defined by Dove’s blog, is an unpleasant action or habit which causes discomfort or embarrassment to others.
Sometimes we indulge in certain habits that are unwarranted. Even when our conscience says, “no don’t” we still go ahead and do it all the same. How can one possibly explain why some people enter a bathroom/toilet with the intention of making themselves comfortable or easing themselves, but instead make endless phone calls while the toilet is locked to others for use?
This is definitely considered bad manners in the highest degree. Nobody will definitely be pleased to get to a bathroom door to ease themselves and find it locked, but suddenly hear someone talking endlessly on phone in the background? I bet, if it is an office setting, two or three consecutive bad manners of this sort will cost the perpetrators their jobs. You do not want to be in this situation, so please, do the right thing by taking your cell phones out the door so the bathroom/toilet will be available for others use.