Museum nemesis

[Justin Bieber]

When visiting a [museum] or [gallery], you will encounter at least one [Museum Nemesis]. These are the people that you see over and over again that inconvenience you repeatedly during your visit. You can tell your Museum Nemesis by some of the following traits:
-They will prevent you from seeing displays by getting up close to them, blocking your view
-They often bump into you by stepping backwards without looking. They will rarely [apologise] or even make eye contact after doing so
-You will never lose them. Even when you think youve lost them, theyll turn up at the next display you wish to look at
-When visiting the museum cafe they will be in front of you in the queue. They will almost certainly take the item you wanted, and it will be the last one
You [museum nemesis] can often be defeated by an accidental tripping down some stairs. [Museum] stairs are often made from [marble] or other very hard stone.