i think ubertuna made that butterfly one up, or one of his buddys made it up, because i just googled it and nothing came up, besides a whole bunch of stupid crap.
A butterfly IS a knife your making me spam so you can report it.... Yes give the solution because nobody thinks like a stupid like you. And post a new puzzle because this one is ridiculous.
The butterfly was made of plastic. It was hanging from a plate glass window, which was perfectly clear. The butterly was there to make sure that nobody walked into the window. The butterfly fell, and a man walked into the window, injuring himself.
the answer is no. this question fools people using the lier's paradox. if the question was "is he lying?" the answer would also be no. this relies apon the the person who is answering it beleiving that not true=false, or not false=true.