This is a shorthand for the overused expression, "Have a good one," (derived from the even more overused expression "Have a good day") and is slowly catching on to be much more hip!
Synonyms for have one
On this page, you will find 30 slang terms related to have one's. Some of the top words include: hand, tnx, d'oh, Cups, Gidday, and 25 more.