"Swishing" is a term I learned from some gay friends who, coincidentally, I also met up with during that trip before visiting with the BLs. I just googled it and realized it has different meanings. This is the one I meant:
http://en.wikipedia.org/wiki/Swish_(slang)

I learned it from gay guys who used it in a normal kind of way, so I wasn't aware some might find it derogatory like wikipedia says.