One of our cats has taken to begging. When you are in the kitchen she will come up next to you and meow quite loudly. And what she wants is a share of what you are eating. She doesn't necessarily end up eating it but she wants her share. She loves mayo and rotisserie chicken. She is also quite fond of cheese.
It is just quite disconcerting to have a cat making puppy dog eyes and actively begging while you're trying to make dinner - or even packing the kid's school lunch.