A Real Retrosexual knows how to tie a Four-in-Hand knot when wearing a tie -- and ONLY a Four-in-Hand knot, not a wussie Windsor knot designed for an effiminate fop who resigned his Kingship rather than Deal With It, and hadn't the brains to learn to tie a Four-in-Hand knot. A Really Real Retrosexual also knows how to drive a Four-in-Hand rig.
Also a Retrosexual should know how to tie a bowline, a flying (or tugboat) bowline and a Spanish Windlass. And tie anything to anything with a series of half-hitches.