The other woman. Also see Goomad.

when you're hungover as shit after a spending a night drunk as a skunk

A woman whose one level above a jump off but always below the wife. A sidepiece must know her part. While he may meet your family. You will never meet his. A sidepiece is a women he will never commit to. A sidepiece will never be wife material only an easy fuck.

a guy that does anything you want that isn't your boyfriend and you can still get with other guys. the best thing a girl can ever have.

Someone that you talk to, to your convenience while you are in a relationship. No strings attached, no stress, no expections, no bullshit.

A girl or boy you speak to on the side because you do not have time for a boyfriend or girlfriend