George Fisher is a good friend of Grace Marple, the owner of a local convenience store. Every day on his lunch hour, Fisher goes into Marples store and looks at all the candy. After checking out Marples candy and talking with Marple, Fisher usually buys one or two candy bars. One afternoon, Fisher goes into Marples shop, looks at the candy, and picks up a $1 candy bar. Seeing that Marple is very busy, he catches Marples eye, waves the candy bar at Marple without saying a word, and walks out. Is there a contract? If so, classify it within the categories presented