A - Orginal upper tan line - note the blurring, caused by a variety of shorts with slightly differing waistband styles/heights.
B - Original lower tan line, now faded slightly due to lack of sunlight as a consequence of said shorts.
C - Yes, look closely - that's the new tan line, appearing more than a few inches down
So, there you have it... concrete proof that I'm not a sunbathing weirdo. Oh, and Happy HNT to one and all!
Edit: There is a line. There is!!!