Great idea!

go to a costume shop. Get an FBl uniform.
(notice, FBL, but the L is lowercase)
borrow someones giant black SUV, put some
lights on top of it.

BANG on their door HARD. Explain to them
that they've been involved in an illegal pyramid
scan.

and to relate it all back to metalworking, it
involves scaring the hell out of someone for
sending a "CHAIN" letter.

:-)

Rich