Pip is a common street drug, also known as ice, crack, cold, rock whatever...
You'll find pip heads down at centrelink or up at 5am scraping around on the floor for more pip because Pip is all they think about
And generally if you see a pip head, tell them there's a some crazy guy giving free pip away around the corner, and then run the other way!
Its appropriate when Pips around to insert Pip into every conversation just to concur that you are all in fact, Pippin of your head
"Hey, can u pass me the Pip plz?" "Sure, but first I need to Pip coz Pip just keeps calling me n I told Pip to Pip off before i really lose my pip!"