If you could only have one single body movement...

[Selkie]

Let's say something happened, and you can only perform one specific bodily movement now. Which would you choose?

Pelvic thrusts for me. Second choice would be chewing, so I wouldn't need someone to partially digest my food for me.

[ME##]

Being able to breathe. 

[Selkie]

Being able to breathe. 

eh, diaphragm and heart and any other subconscious rhythms don't count.

[snorkel]

Being able to breathe.  

that's part of autonomic system, which also controls genitalia, for the consideration of pelvic thrusts as an option. I'd choose my arm.

[YPrrrr]

My jaw for chewing, drinking, and speaking

[strongbad]

My right arm
[spoiler]So I can beat it [/spoiler]

[??????]

my fingers so i can still tickle silly animals

[rdl]

right arm. i could get used to a wheelchair, but i couldnt live without the power of grabbing

[ahshshj]

nodding my head 

[YPrrrr]

right arm. i could get used to a wheelchair, but i couldnt live without the power of grabbing

That requires fingers as well

[Nyerp]

i would like to be able to move my mandible!