Simplify the following text for a Grade 10 native English-speaking person.
Original: This chair attack involves a wrestler placing their opponent so that they are horizontal with their head resting on a chair , then hitting their head from above with a second chair , squashing the head of the opponent between both chairs . This particular attack was spawned from the original con-chair-to , which was popularized by Edge & Christian and involved two wrestlers sandwiching an opponent 's head between two chairs .
Simplified: This attack has a wrestler lay their opponents head on a folding chair , they take another chair and hit their opponents head sandwiching the head in-between the two chairs .