dirty old man 
noun informal
An older man who is sexually interested in younger women or girls.I just finished a book about a dirty old man and a teenage girl who runs a hot porn site in Japan....
- The decor is Hard Rock Cafe-ish, and basic business concepts seem to include loud music, a ‘party’ atmosphere and a crowd mixing young, hot girls and dirty old men.
- This is not a dirty old man who bothers young girls.
- Aprilesque
- April Fool
- April 'foolery
- April Fool's Day
- April Fools' Day
- April-gowk
- Aprilish
- April shower
- April showers bring (forth) May flowers
- a priori
- apriorism
- apron
- aproned
- apron stage
- a prophet is not without honour save in his own country
- apropos
- apropos of nothing
- après-
- après moi le déluge
- après nous le déluge
- après-ski
- après-skiing
- apsara
- apsaras
- apse