As I read this of yours, I remembered having had (or having felt that I had), in 2006 or 2007, to teach my 10th, 11th, 12th grade Latin students how to shake hands--really!--the physical angle, the grip strength of the hand--not too much, not too little (no jellyfish), and how to introduce one person to another. All this so that they could appropriately behave at their upcoming prom, and be able to introduce their dates to the principal, as required. The kids got up and practiced these behaviors, in at least two different class periods. To my extreme surprise, it was clear that they actually enjoyed doing this.