The scene: Prudence's local up-market bakery. There are two whole apple strudels and one extra slice on the counter.
Prudence to pretty young boy: ... and half of that strudel, please.
PYB: We only sell them whole.
Prudence: Or in slices?
PYB: Yes, in slices. (looks relieved)
Prudence: Right, I'll have four slices, but unsliced, please.
PYB: gurgle (looks absolutely stricken as he turns away to deal with the strudel)
And what was in Prudence's little cake box? Four slices of strudel. Sliced.