What do you have a hard time doing that seems simple.

I was looking over the question about eyebrow lifting and it got me thinking about all the weird stuff that seems common enough and yet I can’t do.
I can’t whistle a high pitch whistle using my fingers like my brother can. He is so loud you can hear his whistle a whole block away.
I can whistle for a long while and I can sing but I can’t whistle a tune. It all comes out sounding the same everytime.
My right hand can snap my fingers loudly and my left cannot.
My husband can’t even snap his fingers.
I can raise my left eyebrow but not my right.
So share your disappointing non-talent.