aflh Share definition Flag an abreviation used by people on instant messengers to symbolise laughter meaning abso-fucking-leutely hilarious BOB-"omg fred that wos aflh" FRED-"yeah i really wanted to spend my saturday covered in shit." aflh by dude wo makes up new things October 3, 2005 0 0 Get merch Get the aflh mug. Buy Now — $32.95 See more merch