When a waitress receives a greater tip because her thong is showing out the top of her pants.

In related circumstances, it can actually work in reverse and punish those who shouldn't be in a thong.
Al: “I just gave the waitress a $7 tip off a $10 bill, even though it took forever.”

Ricky: “Why?”

Al: “Because I could see she was wearing a pink G-string and I saw it heading down the crack of her tight ass when she bent over…had to give her the thong bonus.”

Ricky: “Totally.”
by Louisiana Gold March 9, 2009
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