McDonald's

When the media tells us that advertising for young children can influence their behaviors and actions, I now can personally attest. We are driving home and we pass a large billboard on the highway for the McDonald's that is 20 miles north. What does Izzy yell from the back seat, "Pizza!" Now I know McDonald's doesn't sell pizza, but at 20 months she has figured out that what they have is what she wants and it is probably like pizza. Pizza to her could also mean pasta. Her two favorite foods. So now every time we drive pass this sign and she yells, "Pizza". I yell back, "No, McDonald's". Again I reiterate, how does a young child who cannot read, know that that sign that only states McDonald's, the classic arches, and where it is located, know that is what she wants?