Born in Stockholm (Sweden), now live in Sapporo (Japan). Hold a Ph.D. in computer science and work with computers during the days, perform magic in a bar during the nights (and weekends, for kids). Also used to teach historical fencing back in Sweden.
Our university has some signs with a rhinoceros saying things like 安心してくだサ～イ ("anshin site kudasai", please be calm/do not worry), 確認してくだサ～イ ("kakunin site kudasai", please make sure/check carefully). The "sai" part is a polite inflection of verbs to indicate that you are asking someone to do something. The word for rhinoceros in Japanese also happens to be "sai".
My colleague tells me there are lots of videos from Japanese TV with bad animal puns to teach people polite Japanese.