It's a huge turn on to see a guy wear a big, even gaudy choker style chain around his neck. I encountered a guy like this recently and even though I hesitated, I finally complimented him on his chain so that if he were bi or gay he might take me asking as a possible open door for him to suck some cock or get sucked.
But that day he just said thanks, that his wife gave him the chain when they got married.. He was a hot daddy too. Stocky build with thick legs and arms that always put me in the mind of a big penis.