As Smart as Geek Is Chic Right Now Lyrics

this is my second tab and im not sure if its right but it was as close as i could get.
intro:
they made a mistake at the toy factory,
forgot to turn off, the brain machine.
so when security opened the door the next day there was a
plastic, brand new army.
and they asked the gaurd who had made them but
his knees were so shaky and he wasnt so smart
so he shot them all dead...
and thats pretty much the song except im not too sure about the last two lines, but
you can figure it out...