Think of the mushroom like explosion of an atomic bomb. Imagine, instead of ash, dust, shrapnel, and all the other rubbish flying at you through the air in a huge wave of power. Imagine every piece of flying material, on closer inspection, turns out not to be rubbish after all, but words, thoughts and emotions.
Rewind the image: Let the explosion shoot back, get smaller, follow it to the horizon where it started, and you will see all those words, feelings and emotions shooting back into the top of a adolescents skull.
Now imagine that adolescent looks absolutely mental: skirt over skinny jeans, unfitting hairstyle, trenchcoat billowing around her...
...yeah: that is me