It does seem a bit odd to be hanging out washing in your underwear, especially if your garden is overlooked.
And as for no-one should be looking in your garden - I doubt your neighbours are staking it out with a telescope, but they may very well glance out of their window in the direction of your garden and notice you! I also think it's pretty unlikely that a man would vault over the fence into your back garden and attack you just because you were out there in your underwear. That seems like a silly argument to make.
FWIW, I don't think I'd be offended if I spotted a neighbour hanging out washing in their garden wearing only a bra and pants. But I'd definitely be a bit
