Similar to door bell trade but the unscheduled arrival of a previous craigslist respondent showing up at your door unannounced for a repeat performance of the gay sex
by the Square Gang April 14, 2008
When one has a sexual partner that you are not emotionally attached to but have sex with regularly. The action of ding dong dick is to represent the easiness of which getting sex with them is. Just ringing the doorbell will provide intercourse. The phrase is also a play in ding dong ditch.
by Inside man June 28, 2013