the penny drops

(British & Australian)

if you say the penny drops, you mean that you have finally understood something It was only when I saw Ron's car outside Penny's house that the penny finally dropped and I realised they were having an affair.

See spend a penny

Common Names:

Name	Pronounced	Usage
Abidemi	-	Western African, Yoruba
Vishal	-	Indian, Hindi, Marathi, Gujarati, Punjabi, Telugu, Tamil, Kannada, Bengali
Yulduz	-	Uzbek
Aston	['æstən]
Boutros	-	Arabic, Coptic
Prokopios	-	Ancient Greek