I was recently trying to remember when we started doing this, but for years in our household we have referred to mice as "furry friends". The term applies whether they are running around in the walls, whether they have met their ends in mousetraps, or whether they are feeders. As in, "oh, we caught another furry friend today"; "Did you give Eclipse a furry friend today?" "Check the freezer, I think we are running low on furry friends"; "Looks like our furry friends have gotten onto the countertop again". It gets a little weird when it's "Did Hoosac eat his furry friend yet?"

When I was a kid, my mom called urates "new age snake turds", because uhh, they look like a much more new age-y version of a turd? (Hmm, maybe poop is "olde worlde snake turde"...)

What are your personal terms and euphemisms?