I once asked a belayer, who lacked significant trad experience, to stand directly below me as I lowered a few meters off an extremely shit nut.
I was aware that the nut would likely fail if they stood at all away from the wall (as this, for you non-trad-climbers, would increase the angle of the pull on the nut - i.e. pull it outwards more rather than just downwards - in this case quite likely causing it to pull out).
I was also aware that it might fail anyway, thus causing me to shag my belayer. She was aware and quite pissed off by the request, though she complied.
She didn't normally mind me shagging her, but this wouldn't have been a good shagging.
As it was, the nut held in place until I reached the bottom and easily flicked it out with the rope, and so her good looks survived another day. But if the nut had failed, I feel I would have been at least partly culpable.
What do you think Fiend?