Same two blokes chatting later

"No, seriously," says the first, "what is your secret?"

"No secret," he replies, "just walk up to them, say hello, compliment them and just start chatting as normal."

So the first chap sees a girl he likes coming out of the ladies room in a pub later that day.

"Hello," he says, "that's a lovely dress you're wearing"

"Oh, thank you" she smiles so he continues,

"Been for a shit then..?"