You are a parent if you can: Do just about anything with one hand while juggling a baby on your hip.
I recently found out that I can peel hard-boiled eggs with one hand. I am not sure when this astounding new talent will be handy (hehe), but I think you all should know about it.
If I were to lose my hand in some sort of tragic accident, I will be able to make deviled eggs still. Somehow, I take some sort of strange comfort in that.