most of the ppl living in pakistan, in my opinion, they have given the term 'heavy bike' only because of the looks of the bike. any bike from which they hear a very sporty kinda sound is considered as a heavy bike for them. then comes the looks of the bike. we dont have bikes such as rusty has posted, we just have the hondas and others which look like a woman coming from an area that had no food for years. that is just a skeleton with a little bit of flesh. but a bike with lots of flesh such as a gixxer or a 'busa is considered as a 'heavy bike' for many. the 'cc' thing is for the ppl who atleast have a little knowledge bout bikes. i believe many of u have had seen kids pointing out at some bikes and saying that 'look thats a heavy bike', and indeed it is, but they ofcourse dont know the engine displacement of that bike, they have judged it basically on its looks. therefore it's quiet easy to figure out that most of the ppl in pk have given this term 'heavy bike' to sports bike basically to the bikes body. while the 'cc' thing for heavy bikes applies to the people who hold knowledge about bikes.