the act of being shady,looking fierce and thinking you can pull that off, when in all reality you can't
"pronounced as you would say suspicious, but without the su"
Hey Scott, you looking spicious, dude how did that even happen?
A polite way of saying what is of or like that which is septic, that is to say: "shitty". Also, in Latin a septum is a wall, so something septicious walls one off from that which is pleasant.