The name of a mythical super-collector, who always gets to flea markets/thrift stores/yard sales/
boot sales/etc. and purchases all of the worthwhile merchandise you are personally seeking out. Also spelled as "
Sum Guy."
Started in rec.games.video.classic, as the name of an individual always invoked by sellers who would tell inquiring collectors "
yeah, we had a lot of <insert collectible here> until some
guy came in and bought them all." That line, or variations, was so common, that it was determined that there was a single
person wreaking all of this havok, and the sellers were actually stating his name- Sumguy.
Applicable to all frustrated collectors who shop in vain for their favored items.
I found a Vectrex overlay at this yard sale; I asked the
guy running it if he had the Vectrex still, and he said that he had the system, a few dozen games, the 3D Imager, and
light pen, but that Sumguy had just bought it all less than 5 minutes before I got there!
