Yes, I shall sit on your shoulder at night and jibber into your ear so that you cannot sleep, until you die.
Equally bad is the horse with no mouth at all, for he is often a rearer or a jibber.
One of them was riding a ‘jibber,’ and in order to get the animal along had tied it to that of his comrade.
"foresail of a ship," 1660s, gibb, of uncertain origin, perhaps related to gibbet, from notion of a sail "hanging" from a masthead [Barnhart, OED]. Or perhaps from jib (v.) "shift a sail or boom" (1690s), from Dutch gijben, apparently related to gijk "boom or spar of a sailing ship." Said to indicate a ship's character to an observant sailor as a strange vessel approaches at sea; also nautical slang for "face," hence cut of (one's) jib "personal appearance" (1821).