I can crack my left thumb on command.
I can make beautiful music with my armpit.
I can make a popping noise with my knees.
I can move my right ear independantly.
I can make both of my eyes point up, so that the whites are showing.
(I won’t even begin to discuss my prehensile rectum.)
Not a whole lot I’m afraid…
the fun and annoying hand whistle,
raise each eyebrow independantly of the other (and make them dance)
and make three loops in my tongue
Another one I forgot to add:
I can bend my left thumb all the way back to my arm. It makes people say “Eeeeuugh!”.
I can gleek…some ppl call it skeeting. I can press my tongue to the roof of my mouth and make saliva shoot straight out of my salivary glands. Sexy, no?
I’m the only female I know who is capable of such talent.
I can, with effort, drag my weary carcass out of bed in the morning.
Wow, I thought I was the only person in the world to be able to bend my thumb all the way back and touch my arm.
I can also bend my thumb and hook it under my 1st knuckle,
and twist my arm behind my back to the outside of my shoulder blade
Well, Samarm, I don’t know you that well but I guess we could start with…
Oh! What can I do with my body? I thought the title was “What can I do with your body?”
I can fold the ends of my tongue into a clover pattern.
Tibs.
i can move either eyes sideways while the other one stays still. That really freaks people out when im just talking to them casually and i deceide to do it 
I can, apparently, force it to ignore a perfectly good straight line for over half an hour.
I can bend my right index finger at the second joint without the first joint moving at all. This is less a trick than the result of some serious tendon damage, but nobody I’ve ever asked has been able to replicate it.
My right thumb cracks on command.
I can wiggle my ears and move my scalp back and forth.
I can also pop both of my shoulders almost completely out of their sockets. The noise is, I am told, very disturbing.
I can seperate my shoulder blades from my back at a 90 degree angle.
I can push air out of the inner corners of my eyes.
I’ve been able to make my pecs jump around since I was around 12 years old.
Oh, and I can hang upside down from a bar, with the bar hooked on the top part of my feet.
i can make my penis enlarge just by thought…
I can crack my penis.
I can’t believe I said that.
I can force my eyes to focus beyond their usual range by selectively tightening the orbital muscles. Pity that their “usual range” is less than a foot. 
I can press my hands together and make my fingers undulate like snakes. Zyada tells me that this ability is prized amongst bellydancers. The demand for fat, male bellydancers is quite low, however, regardless of their digital talents.
I can trap the end of my left-pinkie finger inside the webbing between the fingers of my right hand and, by quickly pulling my pinkie finger perpendicularly away from my right palm, elicit a rather loud, though high-pitched, pop.
Sounds kind of like a small suction-cup being pulled off.
I can vibrate my eyes spasmodically rapidly from side to side at will, which I have been told looks freaky as hell from an external perspective. Can also cross them but not as effectively as I could half a lifetime ago, when the irisis would disappear front and center, which again freaked out observers. (Yeah, I’ve lost a bit of flexibility. I bet I can still give you spinal shivers with what I have left)
My sister can still assemble her joints. Index finger goes behind main joint of thumb, the visible thumbjoint that lets you thumb a ride by flexing it backwards. Then she puts her middle fingertip behind the second joint of the index finger, counting from the index finger’s front. Then she puts the tip of her 4th/ring finger behind the second joint of her middle finger. Then she puts the tip of her little finger behind the second joint of her 4th/ring finger. And holds them there in that position without any external (i.e., other hand, etc) assistance. AND she can do it without using her left hand to push the fingers into position. I’ve seen her do it. I offer this as testimony to the fact that my sister is an alien, should the subject ever arise. No human oughta be able to do that.
I can twist my thumb around so the nail-end is right up against the first knuckle of the index finger next to it. People say that looks freaky.
I can turn myself into a pretzel, including, but not limted to:
[ul]-Bending my thumbs back to touch my arms.
it really goes on and on.
Also, I don’t feel any pressure points. Those who have studied any sort of martial art will have no fun with me. They put on the Killer Pressure Hold of Death[sup]TM[/sup] and I just look at them funny.
Wow, you’re a freak, alice! 
So, how YOU doin?
Though I’m quite bendy, I can’t do that shoulder thing like Alice. I can turn my feet completely around backward. That’s weird, right?