The parent pimp is often replaying her own pathetic promiscuous youth, usually under the influence of alcohol or drugs, as she faces the increasingly bleak prospects for her own life. Parent pimps have lives that peaked in high school, so they try to regain that lost luster of youth, or a reasonable facsimile thereof.
Cool Mom is one of the variations of parent pimp.
Jerk Dad is the other spouse, and lusts after anything that moves. He is one restraining order away from the pokey.
Jordan got hooked up by the neighborhood parent pimp. All he has to do is hop the fence after 11 and walk in as the back door is always open.