Mr. Exploiter
From A KoL Wiki

Mr. Exploiter
This is a badge of "honor" purchased by somebody who was "wealthy."
Type: accessory
Cannot be traded.
Cannot be discarded.
Notes
In the days of Uncle P's Antiques, a Mr. Exploiter could be purchased for 1,000,000,000 (that's right, a billion) meat. Then Uncle P halved the price, still half a billion. Wow. Now that the Mafia's come back from the Rifty Peak, however, the price is a billion again.
The only thing this item does is display the message This person is the lowdown dirty bearer of a Mr. Exploiter in their profile.