Those fond of effing and blinding, by contrast, are likely to be the most honest in any given group, according to academics at the University of Cambridge. Published in the journal Social Psychological and Personality Science, the study describes how a cohort of 276 participants were asked to list their favourite swear words in order to gauge how fond they were of turning the air blue.
http://www.telegraph.co.uk/news/2017/01/18/foul-mouthed-people-also-honest-study-finds/