Not direct from .ppt format, but my current DSLua code can move from image to image, pretty easily. It's designed to work with Eroge type games, but should work just as fine for presentations.
While I know you mean in case of someone confusing schooling establishment from shooting establishment (many of the same letters) I am still going to read that as lockdown (also known as lock in) for a pub
being drunk in school was either because drunk on playing field or could not be arsed with one particular Thursday afternoon so went and had some beers and played some games instead before returning for an ill advised last lesson/period