I used to have kids in my home 24/7 so I trained myself not to use actual curse words. I use a couple of strange ones. "Suck an Elf!" which I picked up from a tv movie that the kids watched constantly. (10th Kingdom) "Slug in a ditch!" Yet another tv related curse, this time one that TPTB used for tv editing of an actual cursing. But my most common one is "You Big Ugly Dog!" I didn't know how much I said that one until my oldest niece asked if that was the name of my computer when I was first learning my photo editing software.