hows your bum for grubs Share definition Flag how are you? or what's been happening? good ol' fashioned aussie slang. as a "very" informal greeting "hows your bum for grubs? hows your bum for grubs by the bobs January 17, 2014 0 0 Get merch Get the hows your bum for grubs mug. Buy Now — $32.95 See more merch
