Also known as a shoulder surfer
: a person that loiters just off your shoulder whilst you are typing/surfing.
Usually the first indication of a nosey seagull is a useless throwaway comment about what you are looking at...
they can also be identified by the tilting of their head that catches your eye...then when you turn round, their stupid big fucking beak is almost touching your face.
They also have a nasty habit of picking up and reading printouts from a printer, that clearly do not belong to them.
They also tend to have stupid names like Roger.