Shades of the old USENET trend of including "NSA Food" lines in signatures. I never saw the point since it would so easily be ignored. Sample USENET post from

Shades of the old USENET trend of including "NSA Food" lines in signatures. I never saw the point since it would so easily be ignored. Sample USENET post from December, 1987 with an "NSA Food" line in the signature (and a related joke line): https://groups.google.com/forum/?fromgroups#!topic/comp.sys.amiga/6pGwO4St5L4 https://groups.google.com/forum/?fromgroups#!topic/comp.sys.... Discussion of "NSA food" lines from April, 1987: https://groups.google.com/forum/?fromgroups#!topic/news.misc/cDkMQNMZzy8 https://groups.google.com/forum/?fromgroups#!topic/news.misc...