the act of being a jibb, to be of below normal standards and having an IQ about the same as Forest Gump. The subject referred as a jibberman usually has poor bowel and bladder control, Noticeable in obvious staining below the waist on their clothes.
When you are in a conversation and you don't knowwhat the fuck the other guy is saying. You either think he/she is confessing that they are homosexual or they are saying a nasty sex position or technique they used
i was walking into the lockerroom to get my sports gear when i saw my girlfriendgiving head to a teacher while taking it in the ass by the principle so i mummbled "You Jibbering Box A-Cookies" and backhanded that bitch in the face.
jibberjabber means verbal comotion, or talking in a way that annoys anyone present. and can be replied to with the phrase "quit your jibberjabber margo you fool"