BAAAAAH Share definition Flag Used when somebody says or does something sickening, peadophilic or just plain nasty. Joel: "That girl has nice legs" Iian: "SHES 8 YOU PEADOPHILE!" Joel: "Still good though" Iian: "BAAAAAH BAAAAAH by Tommy May 13, 2005 0 0 Get merch Get the BAAAAAH mug. Buy Now — $32.95 See more merch