the penny drops

Phrase

 * 1)  Understanding is reached; one comprehends.
 * 2) * 2011 August 27 (broadcast date), Doctor Who, series 6, episode 8, Let's Kill Hitler:
 * AMY: In the time I've known you, when have you shown the slightest interest in a girl?
 * MELS: Penny in the air!
 * AMY: I've known you for, what, 10 years? I've seen you practically every day. Name one girl you've paid the slightest bit of attention to? (RORY is flustered, runs from the room.)
 * AMY: Oh my God! Rory! (AMY runs after RORY.)
 * MELS: And the penny drops!
 * AMY: Oh my God! Rory! (AMY runs after RORY.)
 * MELS: And the penny drops!

Usage notes

 * May be used with variable tense and aspect: "the penny dropped", "the penny has dropped", "the penny would have dropped", etc.

Translations

 * Danish: der faldt tiøren
 * Dutch: het kwartje is gevallen, zijn frank is gevallen
 * French:, ,
 * German: der Groschen ist gefallen
 * Hebrew:, ירד לו האסימון
 * Hungarian:
 * Irish: thit an phingin
 * Persian: دو هزازش جا افتاد (dō hezāresh (jā) oftād) meaning "his(/her) two thousand dropped" (his two thousand dinar)
 * Polish: dotarło
 * Portuguese: caiu a ficha
 * Romanian: îi pica fisa
 * Russian:
 * Spanish: cayó el veinte, cayó la ficha, cayó en la cuenta
 * Swedish: polletten faller ner,
 * Turkish: jeton düştü
 * Welsh: mae'r geiniog wedi syrthio