a sponge. :)
a sponge
A sponge.
a sponge holds water because of its holes
A sponge.
If something doesn't hold water, it is full of holes. If an argument doesn't hold water, then it's full of logic holes. In other words, it's not holding up as a logical argument.
a human?
A sponge.
a sponge
"To hold water," meaning to be believable, is usually said of explanations or theories, not of ideas in general. Valid theories "hold water" because they have no "holes" in them.
a sponge
All volcanoes are holes in the Earth that hold magma from underground.
sponge