Well, hello. This is odd. I wish this had been around when I was in school. In my Biology lower division lab class, my lab partner Andrea and I had to dissect a rat. The teaching assistant brought in rose-scented incense to neutralize the smell of formaldehyde. But it didn't exactly work. We just ended up with rose-scented rat. Both Andrea and I had the flu, and we were nauseous as hell. Before you start dissecting, you have to tie the rat down–sort of like putting it in bondage–and to break the psychological tension, I made the rat dance like a marionette. Anyway, long story short, Andrea accidentally sliced open the rat's cecum (i.e., the part of its intestine where the poop is, which the teaching assistant warns you most definitely 

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