I just want to clarify a common misconception, here. Average people aren't 8 heads tall, and nowhere near 9 heads tall. Most people are 7.5 heads tall, with 8 being 'tall' and 8.5 being 'real damn tall'. 5.5 heads tall is pretty dwarfy (around 4 ft 4 in), so it's probably just the perspective throwing people off.