Pre-School YMCA event - Just after our parents left the instructor drastically changed tone and told us we'd better behave or else he'd "Take us outside and spank our asses with a piece of wet wood." Fourth grade teacher who was just spitefully vile to begin with, about 30 mins before the end bell I had to pee really bad and raised my hand. She just stared me down in silence like Joan Crawford in Mommy Dearest. I kept my hand up for the duration, she never responded, I rode the bus home hiding wet jeans. Seventh Grade Shop Teacher who I'd previously had a pretty jovial relationship with, one day took extreme offense to something I'd said and pulled me to the side and sternly whispered "I'll take you out back and kick the living **** outta you..." Eleventh Grade English Teacher who was absolutely phoning it in and barely understood the curriculum, but was bitter/vengeful about it and took it out on her students by repeatedly flunking them.