ive recently got into a discussion with 3 female friends and the conversation got to sex (as it always seems to lol) and power fucking (steady hard powerful intense fucking in a position where the guy has the leverage such as doggy or missionary) and then size came into play and 1 girl stated that 8 x 6 inches was good for that and the other 2 stated that was too big for such a intense thing and smaller like 5 -6.5 x 6 was perfect, what the ladies thoughts on power fucking and size?