If we're doing stupid things said by students...
"Dude, I can fucking speak French. Look: 'Spaghetti, Pizza, Futbol'. I don't need your damned patronage. - Someone in my French class.
"So, like, If Water Vaper is water's gas form, and Ice is water's solid form, then what's it's like, liquid form?" - A rather ditsy girl in my Earth Science class last year.
Also, while I'm writing, I have a story I'd like to share:
In the sixth grade, we had an aseembly where a Native American came to our school and talked about his heritage, his culture, etc. Everything was going just fine until a ceremonial song at the end, which the sole tribesman sang while playing a pair of bongos. It had to do with death, loss, shame, and everything else dismal, and was apparently very sacred to the tribe. But as he started to play, one of the teachers, also the head of the pep squad ironically enough, began to clap in tune to the beat, smiling like an idiot and cheering. Almost everyone began to follow suit save myself and a minority of other students and teachers. It was cringe-worthy, but it didn't stop. As if fated t be cliche', the Indian stood up, shed a single tear, and walked off stage. Then all of the students, including myself whom was against the effort of sacrificing a sacred melody for the sake of "School Spirit", had to write an essay detailing what rude little punks we were.
Oddly enough, this punishment was handed out by the very same woman who had started the clapping.