That would be dependent on local law, age/weight of additional rider and type of bike. Many places forbids an adult to carry another adult on the rack of a bike, while tandems and carrying kids are OK.
Yes but everyone does it. it isn't REALLY illeagal
no, but it is controlled like alcohol. Providing it to underage people is a crime.
well when people migrate they can be illeagal in some places like Mexico
Yes, If the jailbreaking isn't approved by Apple, it is illeagal.
Well yes, but if there was a no trespasing sign it isn't nessisarely illeagal. But if there did happen to be a sign then yes, it is concedered illeagal. If someone happened to catch you you could be sentenced to a fine or community service.
Some people can but in the United States it is sometimes illeagal however you say the word
yes
Yes
No.
yes
illeagal ones
Not legal