Can you propose an alternative solution?
I assume you already believe plastic straws are bad for our planet.
Straws make up 0.1% of plastic waste. It won't accomplish anything of note other than to annoy people and turn them off of going green in far more productive ways.
More productive and less annoying?
-Go buy an electric car if you're worried about the planet. Side benefit: Saves you money, saves you time, diverts money away from Iran, Saudi Arabia, and Venezuela.
-Go switch out every light in your house for an LED. Side benefit: Saves you money.
-Recycle.