How do you cut a cuboid with 5 cuts?

you can cut two horizontal cuts and one vertical cutsit'll create two columns of three slicesnow, with the last two cutsrun a cut that splits at least four current slicesmaking ten slices totaland...

You only need 4 cuts, and there are an infinite number of ways to do it without a horizontal cut. If you want the pieces to be equal, and a horizontal cut isn't allowed, then you could do it like...

Unless you cut in a squiggly line so that the 2 cuts crossed over twice then it is impossible.

you cut it in the shape of a star :-)

There is more than five. Julienne, roundel, dice, chiffonade paysanne that's five