What is lady in the streets freak in the sheets meaning?

"Lady in the streets, freak in the sheets" is a phrase that is used to describe a person who appears to be respectable and reserved in public but has a wild and adventurous sexual side in private. The term is often used to describe women but can be used to describe men as well. Its origins are uncertain, but it has become popularized in pop culture and is often used in songs and movies. This phrase is not intended to be offensive, but rather a playful way to describe a person's sexual behavior.