I interpret the use of the term..."pumper" as someone who often touts the virtues of cards they own...as being super rare, desirable, or way undervalued...to try to persuade others of such virtues so as they may want to own such cards...thereby increasing the perceived value of said cards/items.
for example...show your favorite hank aaron card. poster posts spic and span aaron touting how rare it is as compared to the topps and thereby should be much more desirable and valuable.
|