Apologies to the Newfies out there, but this is how I heard it.
Read with a *severe* Newfoundland Accent for best effect eh...
2 Newfies are sitting on a bench and have nothing better to do, so they decide to go ahead and get high. Bob, the first Newfie pulls out his kit, ties off the tourniquet, shoots up, and wouldn't you know it, he's as high as a kite.
Tom looks at Bob and says its good stuff eh? Let me have a run with it. An so Tom goes ahead, ties off, shoots up, and wouldn't you know it, now there are 2 stoned Newfies sitting on a bench, high as kites.
So Bob says to Tom, "Dude, I'm really fucked up, and now I'm kind of sad too."
Says Tom, "Oh no! Why are you blue eh?"
Says Bob, "Well you see, I just found out I have AIDS, and I shot up. Then you shot up, and now you're going to have AIDS too."
Tom starts laughing hysterically, doubling over and patting Bob on the back.
"Oh don't you worry about me man. I'm fine, in fact I'm finer than fine. I'm wearing a condom!"