A smilie used in chatboxes or online games when talking about money.
Examples from RuneScape, an online role playing game.
Person A: I got 10 mill gp (1.000.000 gold pieces) on Bank.
Person B: $_$

Person A: I found 100K gp (100.000 gold pieces) on the floor! $_$
by Milennin December 08, 2005
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