I'm hoping some of our American friends here can help me with this one.
We were watching something on TV tonight and the expression 'putting out' came up (in the context of a guy and girl dating) and my wife and I were trying to work out what it actually means in terms of its origins.
We've heard it in movies / TV shows numerous times and we get that it's an expression used in the context of whether or not someone might for example have sex on a first date, but what does it really mean.
I tried googling it's origins and found something about putting the cat out at night or putting pies out to cool, but neither seem right.
So who has a credible theory to help me on this burning social issue