Thank God someone else calls them that. I've been castigated left, right, and center for calling computers "pooters" or "poots", but I've been doing it since the 70's and there's no stopping me now.
Some folks spell it "puter" or "pute" but that sounds even more silly, with the "y" in there: "pee-you-ter". Feh.
Besides, "poot" reminds me of Frank Zappa... whizzing and pasting and pooting through the day...(Let's Make The Water Turn Black).