A man asked a woman for id. She gave him her driving licence. He said "Are you sure a pretty thing like you would drive, cos I wouldn't think its right."

Yes, it's sexist and unprofessional. It's also a very lame attempt at a pick up line.

She should have asked: How someone as retarded as him could be checking id, cos I wouldn't think its right."

Yes, it is a bit sexist. However, it's only a stupid joke. There's no reason to worry about little things like that. Some people will always be sexist.

A little, but I think it's mostly a pickup line for a cop.

a man asks a woman or a women asked the man?

Kinda. I dont reckon she took offense.

A man asked a woman for id. She gave him her driving licence. He said "Are you sure a pretty thing like you would drive, cos I wouldn't think its right."