Toilet Camper

Someone who spends an obsessively amount of time on or close to a toilet. This is usually a term used by either restaurants or annoyed people. Someone may end up toilet camping if they bring in a digital device with them and become to lazy to move.
The term originates from "Camping" the act of staying/living in one place for a medium to long period of time and bathrooms in commonly used areas

Dude, there has been a guy in that toilet for over an hour now, he's such a Toilet Camper