i touched the heater in biology class at the end of an experiment after the teacher had told us all 'don't touch it' just to see what it felt like... just to feel something... and, of course, because the heater was on, i burnt my fingertip. i had to rinse it under cold water for a bit afterwards and i was trying to be discreet about it but my teacher noticed i was a bit slow packing up so she asked me what i was doing. i replied that i was just washing my hands and she believed me. if she had realised that i had burnt myself from touching the heater i probably would have been banned from using the equipment and yelled at in front of the class.