What's the difference between period blood and sand?

I can't gurgle sand in my mouth.

There are a lot of differences

what really? please explain

What difference does the difference make ? I want to know what is humorous about this.

Oh come on. It's a sick joke. I think it's funny.

Have to agree it is a sick joke.

It may give new meaning to the term.

But hey....whatever blows your whistle !