Contra Dance Flourishes: How to Do "The Ron Buchanan Swing Intro"

This week's flourish is one we were reminded of at the Flurry this year -- caller Ron Buchanan has frequently taught this variant on getting into a swing when he has called at Glen Echo, among (several) other places.
It's a fairly simple flourish, but it can be a lot of fun -- just, leads, when you drop your follow's hand behind your head, make sure her hand doesn't inadvertantly land directly on the back of your neck, especially if it's a few dances in and you're especially sweaty. :-)
Enjoy!
Dancers are Steven Roth & Ryan Holman.
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