Sounds Incorporated Puns

Hey guys. I need help with a pun, I've been thinking about it for a while and haven't come up with it. In Portuguese you informally say "xau" when you're saying goodbye to someone (sound's almost as the Italian "ciao"). I have a friend who always makes this funny pun when we're going our separate ways, he always says "Xau-sescu" (Ceaușescu - as in the Romanian dictator) and for a few months I've been looking for a nice comeback to that pun. I was looking for a way to incorporate the name of a dictator and the word "goodbye" (in any language possible), but so far I haven't been able to. Could you guys help me out? In my native language, Portuguese, I haven't come up with anything cool (my knowleadge in dictator's names is also not very vast).

Thanks!