Help me identify a movie!
 

...based on only one quote, since that's all I really remember. :(

A young guy is talking to a older woman out near the pool, and she not-so-subtley hints to him about seducing her by reciting some lines from The Graduate, but he doesn't catch on.

"I have just one word for you. Plastics."

I think she said a few others, but I don't recall what exactly they were.

What movie was this? It's making me a little crazy.