One of the most interesting features of Finnish dance halls besides the age group, the music mix of tango, ballads, humppa and rock & roll and the fact that a few of the men seem to need too much courage of the liquid variety is that there are signs like this one here that also give the sexes turns to ask for a dancing partner, so that if the first line is on women look for men, the second men look for women and the third signals the “free-for all”.
At least dancing is something I more or less know how to do, and I already have a good partner ;-).