Say a dude living in the USA had a friend he trusts living in say Scotland, who had some AAS. If the dude in Scotland sent the American some of the AAS what are the chances of things getting messed with by customs?
Very unlikely, customs has a list of countries to watch out for, some are very high on there and almost impossible to get through - ie. China, Thailand, Mexico, Greece, Russia, Bulgaria, Poland and obviously any country in the midle east ( so much Karachi
) other countries like Scotland have good reputations and aren't as likely to get searched at customs.