Step One: Lucy makes it known that she's on to the fact that I've got food, that she's going to be expecting some of it and that she definitely deserves whatever it is that I've got.
"Heys der, ma. Whatcha got? Smells pretty darn goods!"
Step Two: Lucy moves a little closer, tilts her head back a little bit (her most flattering position), usually puts up a paw just to make sure that I know she's there, and she's waiting.
"Any days now, Ma! I aint's got all days to wait for you to drop dat!"
Step Three: The whimper or the famous boxer sigh heard round the world... Followed by the human caving. Lucy may be conning her human, but at least her human is aware that she's being conned! Fact of it is, I don't mind sharing with Lucy one little bit if it's not bad for her, especially when she works so hard to get whatever it is that I'm eating.