Perversion is a form of human behavior which deviates from what is considered to be orthodox or normal. Although the term perversion can refer to a variety of forms of deviation, it is most often used to describe sexual behaviors that are considered particularly abnormal, repulsive or obsessive.

What does perv mean in slang?

/pɜːv/ a pervert (= a person whose sexual behavior is considered strange and unpleasant by most people): Stop looking down my dress, you perv. SMART Vocabulary: related words and phrases.

What's the meaning of dirty old man?

Dirty old man is an expression some people use to describe an older man who they think shows an unnatural interest in sex.