From the archives, rules of thumb for the neck:
I know that bow-tie people tend to appear cocksure of themselves--people like Professor I. B. Cohen, of Harvard; Archibald Cox, of the Watergate hearings; Louis Farrakhan. They are also often short men, like Arthur Schlesinger Jr. and Senator Paul Simon. Mike at the time told me to be careful of short men who are cocksure of themselves. Luckily, I suppose, they often wear bow ties--the dead giveaway.