elevator busters

were you ever purposely boxed out of an elevator? did you ever get annoyed
at those people who would not hold the door open even if you're voice is 10 decibels higher in shrieking 'up!' or 'down!'? 
these creatures are the elevator busters monopolizing the lifts each time you badly needed that ride. watch out because they operate in groups. 
as they say, there's strength in numbers.