ok, i'll join the fun.....
my project is so secret, even I don't know what i'm doing........"
or my favorite.....
" my project is so secret i could tell you what it is, but i'd have to kill you FIRST......."
really, i know the rules when it comes to state secrets, and you definitely don't discuss them in an open forum like this, unless you want to take a very long vacation at the Greybar Hotel. if it's a classified project, don't tell us it's classified, and THEN tell us what it is, because if it's classified, it's definitely no longer a secret. if the project is real, and it's really classified, you just lost the contract because you leaked classified information. besides, classified projects are usually quite well funded, usually well enough funded for EVERYBODY involved to keep their mouths SHUT.