Sickest joke I know: (DO NOT READ IF EASILY OFFENDED, actually do, because I like to offend)
Frank and Joe go into the woods, for a hike. They come upon a set of railroad tracks they can't find on the map, so they decide to explore them. They split up, Frank goes west, Joe goes east.
They meet up again three days later and Frank says, "Wow! Did I have a great time! I got about two miles down the tracks and found this stream, with a waterfall, and I spent the whole day swimming and fishing! I caught my dinner, and at sunset, just as the sky burst into brilliant color, I saw a wonderful rainbow appear in the mists of the waterfall! The only thing that sucks is that my wallet got swept downstream."
Joe holds up a sodden wallet, "Is this it?"
Frank says, "Yeah, how did you find it?"
Joe, looking smug, says, "I found it as I lay on the banks of the same stream, further down current, of course, making love to the most beautiful woman I've ever seen."
Frank says, "What?"
Joe says, "Yeah, I got about an hour down the tracks when I found this gorgeous woman tied to the railroad tracks, like in the old movies. I rescued her and we spent the day making passionate love on the banks of the stream."
Frank says slyly, "Well, did she, you know, give you a, you know, a blow job?"
Joe says, "No, I never found her head."