Abayaga Share definition Flag Noun: the fictional monster that enters your house when you're sleeping and leaves suspicious white stains upon your bed sheets. "His bedding is crusty, he must have had a visit from the Abayaga again" Abayaga by MrT-maybe January 12, 2023 0 0 Get merch Get the Abayaga mug. Buy Now — $32.95 See more merch