Most contra dancers are familiar with common contra figures like a ladies' chain, or a hey, or even a cloverleaf, but what about the fun things that don't usually get called, but are done if you have a few adventurous dancers on the floor? I could think of a few, but I open it up to you all; I think we need a glossary that I would eventually put up on this site as its own page.
Some of the ones I thought of were:
dancing switch: at least when I use it, NOT the same as just dancing the other role (i.e., dancing lead as a woman, or dancing follow as a man); this is when you and your partner intentionally trade roles as you progress up or down the set; usually the trades happen mid-figure.
two-headed monster: when you and a friend dance as one person; usually it's done where someone is the right hand and someone is the left. The inactive arms are usually around your buddy's waist so you move as one unit. (If you get really good, you can do the lady's part of a ladies' chain, with twirls.) N.B.: Potentially useful when you've double-booked yourself. ;-)
four-headed monster: when two two-headed monsters dance as a pair, with one two-headed monster as the lead and the other as the follow (a four-headed monster can also dance switch or trade who makes up each "monster," but that's more challenging).
Thoughts? Others? Share in the comments!
Update, 11/17/2011, 11:30 P.M.: I've made a Forum topic under the "Choreography" section for this. Feel free to add entries either place, as the mood strikes you, so I can add them to the ongoing list when it goes live!