A (or the) Dirty perve is the worst of the worst: The dirt worst in many ways.
A Dirty perve will comment on the look of young women's hair, often be found perving around the beach ogling the finer sex or staring at any cleavage he can sniff out.
A recent discovery has also revealed a dirty perve will almost always have slippery fingers
Look at him, he is such a dirty perve.
The dirty perve is a disgrace, how does he get away with it.