Definitions by MCMB

bleather 

(ble-thir)) Dalect Cheifly Scot.- !. person who chatters incessantly; someone who babbles on and on ("That wee yin o' yours is a bleather mouth yea").

Reference: Spirit Design

"Oh for hevens sakes your just a wee bleather, talk, talk, talk, talk!"
OR
"all you do is babble your such a bleather"

bleather by MCMB December 26, 2008