"Things You Wouldn't Know If We Didn't Blog Intermittently."
Math major: A coffee cup is a straw. (The hole is the handle!)
A tube, such as a atraw, could be viewed as either a) having a hole at either end, or b) being itself an extended hole.
... or no holes, because if a straw or your garden hose has a hole in it, it won't conduct fluids.