Lady's night in Singapore

Lady's Night is wednesday night in Singapore and it's called Lady's night because everything is completely free for them. Unfortunately it's the opposite for boys: S$ 28 to go to Double O (club around the Chijms, dunno where because I didn't follow people going there), S$ 20 to go in Insomnia (a bar where beers and liquors are free once you're in, girls have to pay to go in too, oops I lied about 'the everything is completely free"). Insomnia is located in the Chijms which is a place around City Hall (2 mins away from City Hall MRT station).