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In cold weather (winter ?) there would be little to no grass
Don´t know where you get this from. Im living in Sweden and we had at least 4 months of darkness, snow and minus degrees and the grass was still there and green. Ive seen guys from America posting this before, and also stating the grass should be yellow in winter. Not so. Not even when covered in snow for months.
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For instance, in America raising a thumb to an oncoming motorist is a plea form them to stop and give you a ride. In the UK the driver might be so offended by the same gesture he might aim his vehicle at you.
Not so either. Thumbing a lift is quite common all over the British Isles and Ireland.