Here is a list of some common signs that he or she might need a kick to the curb. See if them for fun and examine yourself if you want.

Men:
She is married

She is lazy
She is self-centeredShe calls you "baby," "honey," or any variation thereof on the first date
She doesn't have any manners
She constantly calls you, even though you said you would call her
She lacks common sense or elementary education
She wants to go out all the time without you
She expects you to pay for Everything
She constantly tells you she could do better
She puts herself first

Women:

He only wants to spend time with you when its convenient for him
He hates animals
He doesn't leave a good tip, or is rude to waiters
He tries to isolate you from your friends and family.
He cannot live without you for five minutes and you've only dated for 2 days.
He calls you every hour on the hour.
He asks you to get married within four weeks of the first date.
He belittles your choices, your looks, your actions etc.
He picks his toenails without shame
He puts himself first