Things You Can't Do

[Tilly2]

...when you have split skin at the top of both thumbs. 

Connect and do up a zip.

Thread a needle.

Use a knife and fork.

Open a packet.

Over to you...

[Tuvok]

Press the spacebar on a keyboard.

[Atheist]

Come on, Tuvak. Who uses their thumb on a keyboard nowadays? They don't know they're born.