Dam Jam

Lizzy: "Please pass the dam."
Jake, giggling: "You mean the jam?"
Lizzy: "Yeah. The dam. Give me the dam."
Jake: "Lizzy, you mean jam... say jam."
Lizzy: "Dam."
Jake: "Lizzy, say Jake." 
Lizzy: "Jake."
Jake: "Say Jody."
Lizzy: "Jody."
Jake: "Now say jam."
Lizzy: "Dam."
Jake: "Um, why don't you just call it jelly?"