In a large supermarket, there will be more than one checkout lane clearly designated "N Items or Fewer" (or "N Items or Less," which makes Grammar Nazis complain). This allows customers who don't have a lot to buy not to have to wait in line behind those who do.
In fiction, mounting violence ensues when someone blatantly exceeds the limit, or tries to stay under by making up rules about what can [...] [tvtropes.org]