Definitions by Kitter Killer 100000

Yup Yup 

Someone who is stupid and their mouth hangs open and they druel. When you ask them a question all they can say is "Yup Yup"!

That person is a total Yup Yup!
Or Yup Yup over their thinks I care.

Yup Yup by Kitter Killer 100000 April 20, 2004