the last laugh

could we coin another synonym for the idiom when pigs fly and what would it be?

you get answer to this if you answer my following question: will I ever be able to become the president of Serbia with this rap sheet if at the same time I need to be supported by the whole outfit just to stay afloat. at any rate, comes to think of it – if indeed I was Custer in some previous life – would not it be neat that I got the last laugh having in mind that I was exiled from the States without my wont. check my dnk in that grave for God’s sake. it may not be me.