Actually I've been using that one for the past 5 or 6 years. I don't even know if its been on Sickipedia that long.
Back on topic.
Two tramps are sitting together on a bench, and one turns to the other and says "I had sex last night with a woman" and the other says "really? How?" And the other tramp says "Well I went down to the railway, and I came across a girl on the tracks tied down, so I untied her, and I carried her to a nearby bench, and we had sex in loads of different positions" and the said "Wow! Did you get any head as well?" The other one says "nah, I didn't find her head."