Expergefactor

An expergefactor is anything that wakes you up. This may simply be your
alarm clock, in which case it is time to hit the snooze button. But it
may be a dustman or a milkman or a delivery van, in which case it is
time to lean out of your window and shriek: 'Damn you all, you
expergefactors!' This ought to keep them quiet until one of them has at
least found a good dictionary.