I've never been in a situation of stress so unsettling that I forget things, however, I have had students go blank after standing in front of an audience and not being able to articulate a single word. As a teacher, I have managed, after some breathing exercises, that the student manages to carry out his task, beyond that limitation. I do remember, when my father was in his last minutes, that I felt a paralysis not only of my body but also of my mind. As if the brain had frozen. I was completely numb. Sometimes it is difficult to know how we can respond at certain times. Nice night, @tarazkp