bladdy- bladdy- blah Share definition Flag Used when explaining conversation. Such as to make a long sotry short. and my mom was like ,"Go wash the dishes and bladdy-bladdy-blah." bladdy- bladdy- blah by uBERgL00 November 14, 2003 0 0 Get merch Get the bladdy- bladdy- blah mug. Buy Now — $32.95 See more merch