It doesn't happy OFTEN, mind you, but I have been to at least a handful of services where Presbyterians engaged in spontaneous hugging (though, come to think of it, those were mostly part of larger church meetings, where the music and worship leadership were top quality and the congregation was composed of all ministers and elders, or leaders of women's organizations). It has to be something like a really ROCKIN' jazz worship service, with lots of brass, or some great spirituals and a high ratio of black Presbyterians to white Presbyterians.

You have to have the right music and the right mood to convince the up-tight among us that it's okay -- and even absolutely necessary -- to MOVE BELOW THE NECK! If you can get 'em clapping and moving their feet or rocking their shoulders and hips, the hugging is sure to follow (it's like bursting a dam).