Swearing is not a sign of intelligence.
There may be statistically more intelligent people who swear than unintelligent people who don't (who cares either way), but there are more reasons not to swear than to swear.
If anyone thinks swearing is a badge of honor or rationalizes/justifies it after reading some semi-bogus study, well... they're fooling themselves.
And that's definitely not a sign of intelligence.
