Ummm... Whadya mean? I go to clubs, discoes and nightclubs once in a while as well as the next guy, but I haven't seen any common "Ladies Night" phenomena... Sometimes some clubs have nights when they don't charge entrance fees from ladies (usually this will guarantee a large amount of women in the bar, and thus lots of paying men will come in too, thus you get a crowded club easily), and may have some Chippendales-type performances targeted for the ladies, but aside from that I dunno what you're talking about.
Some clubs where the middle-aged and older folk go for some walz and tango, they sometimes have something like "women's hour" which means that women go ask for men to dance, instead of the men asking for women as usually. But I don't frequent such places, as I'm not interested in dancing tango with middle-aged married women, h*ll I'm 28!
