Two bums are sitting talking. The first one starts bragging, "Today was the best day ever! This morning I found a brand new pack of smokes just sitting on the ground. So you know what I did? I sat and smoked every fucking one of them... had the best day ever."
The second bum just laughs, "Thats nothing, today I was walking along the rail road tracks and I found this girl laying on the tracks. You know what I did? I fucked her all day long." The other bum interrupts, "Bull! You didnt do it all day long did you?", the other continues, "Well, no but it was for at least a few good hours, best day of my life."
The first bums asks, "So did she give you a good blowjob?" The other replies no. "How could you possibly be getting busy with this girl for hours, and she doesnt even give you a blow job?" To which the other replies, "How could she? She didnt have a head!"