Drink the Kool-Aid

"Drink the Kool-Aid" is a slang for taking on a belief.
Apparently, Kool-Aid has many more uses than just the propaganda.
And here are some of them:
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2) Europeans use Kool-Aid as a mixer for alcholic beverages. It is
cheaper than liquid mixers or fruit juice. It is lightweight,
inexpensive to ship, and has a long shelf life.

3) Kool-Aid can
be used as a non-toxic dye for art projects. When I started selling on
eBay UK, Kool-Aid was one of my best sellers. One day I received an
order from a customer in Sweden. She wanted to purchase 200 packets of
Kool-Aid in very specific flavors. She was an art teacher and used
Kool-Aid for art projects. It is non-toxic, inexpensive, and comes in a
wide variety of colors. And if small children eat it, no harm done -
they will just have a brightly colored tongue.

4) Kool-Aid can
be also used as hair dye. This use is the most interesting! Again,
Kool-Aid is an inexpensive alternative to regular hair dye, is
lightweight and cheap to ship, offers a variety of fun colors, and is
non-toxic and chemical-free. Check out this video about how to dye hair
using Kool-Aid. Who knew?

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