Joeyed means in slang: Verb. The act of leaving a boyfriendgirlfriendloverspouse without a word or warning. Background Information: This term was inspired by a baby kangaroo called a “joey” or a kangaroo whose birth occurred at an early stage. A joey immediately after its birth uses all of the claws and forelimbs it has already developed to reach its mother’s pouch and body. The joey gradually becomes more active, spends less time in the pouch of its mother and then eventually goes on their own. Also, this describes the manwoman who is dependent on a partner during the initial stages of a relationship. However, she eventually grows bored of the companion after several months or even years and decides to stop spending time with him/her and start hopping around. (in Slang Dictionary, added by Jonathan King)