This was by far the most popular medium among bystanders and curious friends. "How'd the Slurpee turn out?" we heard, over and over. All right. Here's your report.
Discussion: This was a difficult fluid to test, mostly due to the chunky, icy consistency, which made it hard to pour into the bong without spilling (we used the blue raspberry flavor, available at most convenience stores). The bubbles were slow to emerge from the mixture, which made it difficult to inhale, kind of like sucking a really thick milkshake through a really thin straw.
The smoke was cooled significantly by the slushy ice, creating a curious effect. Because the smoke was so much colder and smoother, we ended up taking rips that were much, much bigger than we anticipated. In fact, that first big hit sent one researcher into a coughing fit. After that, though, each consecutive hit was easier as the icy slush concoction melted.
Although the Slurpee flavor wasn't immediately apparent, the occasional splash-back that grazed our lips during a vigorous hit was surprisingly tasty.
Conclusion: The texture was fun, albeit messy. Plus you can drink the leftover Slurpee when your mouth dries up. (The extra, not the bong water Slurpee! Eww.)