I'm sure that Snowy knows perfectly well what sex s/he is! But sometimes it is a lot harder than other times when it is absolutely obvious.
I think that from what you've said about Snowy before that s/he is about 6 months old? Fully grown then. The differences can be more obvious when they just wake from a nice warm nest - maybe it would be an idea just to check then!
A kinked tail can be the result of a fall or other accident, or the result of a genetic defect in more 'delicate' colours such as dark greys. It doesn't cause any harm to Snowy I'm sure, and as long as you are not even thinking of breeding him, is just another facet of his individuality!
(I have to say I did smile when you described Snowy as beautiful and then had to put that Peanut is too. You are as bad as me, I feel so guilty if I praise one, and have to say something nice to all the others too)
Though I have to agree Snowy is beautiful, and so is your man Peanut!