It is easily explained
Mr Optimistic.
_ It is a mistranslation from Russian.
_ It should be
stuffed white envelopes to Yuri Shyus will cure your tail wag
Yuri Shyus is a mythical figure.
_ When he knocks at your door to ask for a bribe, you pretend not to be at home - hence
I would not like to be in, Yuri Shyus