Now I am NOT an electrician
BUT I ask you - would you put your hand into a bathful of water to collect an electric fire which had fallen into it?
Water conducts electricity - therefore if there is sufficient water on the connection to spread from the electric contacts to your hand position - in my view, you will end up with curly hair
The same goes for wrapping 'joints' or electric plug connections in a plastic bag - overnight you get condensation in the bag, which in turn may touch at least two contacts and either it will blow the fuses or possibly overheat and catch fire.
Maybe you are sensible enough to handle the connections with care but what of the small child who happens to stumble over it or rides their little metal toys over it etc., etc., etc.
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Mo and Dick
Youth and Talent are no match for Age and Treachery
Remember: 'Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways - screaming 'WOO HOO, What a Ride!'