Does a straw have one hole or two?

One, it's a tube.

one, its like hollow so its the same hole

That's one of those questions which can be answered using the concept of limits.
If we reduce the length of the straw, the limit will be a circle of infinitesimal length, featuring exactly one hole. The shortening of the straw is a continuous process, and no hole disappears during the process.
==> a straw has one hole.
If you cut the straw in two halves, both moieties will feature one hole, so you will have two holes in this case.
The same is true for a hose. 😑

Supposed to be two but trying to drink a Burger King milkshake through one makes me question that.

That depends. Bendy straws have one hole. Normal straight straws have two.

One.

Two. Ever tied a straw in a knot from the middle? 🙃

It's still a straw, even if you can't drink from it.

Do you live in 2D or 3D?😂

None, it's a solid surface.

If it's a McDonald's straw; after 2 seconds of use it has loads of holes 🧐

I hope there is just one. Otherwise they need to label them "in" and "out."

Depends on how you define the structure of the straw

I hope one.

One hole with two ends.

It has two entrances

2, like a donut

Has to be one.

None.

2

How many grooves does a vinyl record have ?

Depends on if it leaks or not🤔

Just give it to me

0

🤯

Please tell NativePortlander that @swirlie said that the plastic straw was invented by a Chinese-American woman many years ago, who worked in a jelly donut factory in Oregon.

A straw doesn't have any holes.