I was sitting in a science class last year and because it was the of finials I was really tired. The teacher was going over anatomy and stuff as a little recap because we had a couple transfer students join us. I was like half asleep during this.
The teacher: This is your spine.
Me, practically asleep: aw Sc**iße put it back!
Que the laughter. Luckily nobody knew that I cursed because I mostly speak German so that's what I cursed in.