Sorry to say, your friends are wrong and don't have a clue as to what they are telling you. There is nothing in Wyoming state statute that applies to 50cc's or less unless it is a moped. In the case of your crf50 it is considered a Motor-driven cycle under Wyoming state statute. A motor-driven cycle is any motorcycle, including motor scooters and motorized bicycles that have an engine with less than 150 cc's. So this means that to ride your crf50 on public streets or highways you are required to have it registered, insured, valid class of license, and proper equipment including headlight, taillight, brake light, horn and turn signals (though hand signals will work in place of electric turn signals). Now the next question is, do you have a title for it? If no title came with it, you cannot register the motor vehicle. In terms of the little mini pocket bikes, they do not have a title therefore cannot be registered and driven on public streets or highways. They can be cited for unsafe vehicle if driven on the steet. A motor-driven cycle if it does not meet the above criteria can be cited for a maximum of 800 dollars and your license will also be suspended if you're found on a public street or highway. Hope this helps....