It never came up when I did research for the World Builders Handbook (doesn't mean there wasn't one, but if so, it's likely obscure and buried in some article somewhere). If there isn't one, then I guess I missed an opportunity to create one...
"When in doubt, Scout it out"... no, that's not any good. In this case, the creative process could benefit from some more alcohol.
However, the relevance and appropriateness of Scout tattoos are probably inversely related to the amount of alcohol consumed prior to decision-making...