What is Trap door?
{{unsourced|date=February 2012}} [[File:Whiteley's Original Hidden Hand Co., performing arts poster, 1884.jpg|thumb|Trapdoor surprise]] A '''trap door''' or '''trapdoor''' is a [[door]] in the [[ground]] or in a [[floor]], that one enters vertically. Some can open when someone is standing on it. People typically put small doors disguised as something normal to [[Fear|scare]] a person falling into a trapdoor. They can be used for malicious purposes like [[murder]]. However, they can be used to hide things from other people. Trap doors are popular in [[wikt:mystery|mystery]] themed [[movie]]s. The victim who falls down the trap door often is met with danger or a hidden [[wikt:treasure|treasure]]. A standard [[cliché]] deals with the [[victim]] finding himself in an [[alligator]] filled [[swamp]] (most famously seen in ''[[Scooby Doo]]'' [[cartoon]]s). {{stub}} [[Category:Infrastructure]] [[fi:Kattoluukku]]