Lots of reasons. She might have had prehensile butt cheeks, for one. Or maybe she was hot. A cold metal pole against your ass will cool you down real fast.
I’m amazed we’re this far into the thread and nobody has suggested that Jackknifed just dial 1-800-MIXALOT… 
“Prehensile butt-cheeks”? I’m sorry, I just have to say it - BAND NAME!!!
Confucius say, ‘Crowded elevator smell different to midget.’ :eek:
You could have done the same thing to her as she ended up doing to you. After all, she was touching you with her ass!! :eek:
I gotta know:
Was it a “badonkadonk” ass, or a “garbage bag filled with used chewing gum” ass?
Gee, thanks, Tentacle Monster. Now I need to go scrub my imagination with steel wool. :eek:
There are times when a puking smilie would come in mighty handy.
Definitely, the latter. This is what made it so shocking to me. It was like she was purposely leaning on me. If it was a big muscular ass, I might actually give her the benefit of the doubt.
Dude, her roids just used your crotch as a scratching post.
[Cotton Hill] Good Lord, Hank, you’re wearin’ butt-boobies! [/Cotton Hill]