986: Drinking Fountains
Here, we see Cueball, using the restroom, as the title text indicates, he is eliminating the liquid waste from his body, or peeing. He says that he avoids the use of the drinking fountain right after peeing, because he is afraid that he will be forced into immediately peeing again. And as in the image above, he would be stuck in a loop. A loop is a computer science term, but also used elsewhere, to indicates going through the same steps over and over again. In this case, the bathroom and drinking fountain form an infinite loop, which, when used about computers, refers to a loop which never ends, eventually crashing the computer, which is therefore a situation to be avoided at all costs.
The title text says Cueball/Randall would be embarrassed in trying to explain his experiment to someone, as an experiment of this nature seems interesting to geeks but gross to non geeks, and he wouldn't be able to lie about what he was doing if called by someone.
A thread on yahoo answers  with a (purported) Biology major concluded that drinking from a hose and peeing at the same time would not work: the liver can only process so much water at a time, and the majority of it is re-used.
- [Cueball leaving a public bathroom. A water fountain is next to the bathroom door. An arrow points to the next panel.]
- [Cueball drinking from the water fountain. An arrow points to the next panel.]
- [Cueball reenters the bathroom. An arrow points back to the first panel.]
- I avoid drinking fountains outside bathrooms because I'm afraid of getting trapped in a loop.