making grape jelly, as a metaphor

One of my co-workers just came up to me and said: "I'm making grape jelly."
"What?", I said.
"I'm making grape jelly."
"What does that mean?"
"Grape jelly."
"Ok, like right now, as we speak?"
"Oh uh, no, at home. I was just talking to my husband and I said something about jars and it made me think that I have all these grapes, well, not as much as last year because I had to cut back the vines from these bugs that invaded but my neighbour has tonnes and tonnes of grapes but I have about 4 pounds which makes about 7 or 8 little jars as nice little gifts to give..."
"Well good. Grape jelly is good."
"Yeah, sorry, I guess I was just thinking out loud."
"I thought maybe you were using some sort of vernacular I didn't know about or that,'I'm making grape jelly' was a metaphor for something maybe."
Blank look. "No, just thinking out loud I guess. Sorry."
"No problem."

I skipped the light this morning because I needed the extra half hour sleep. My cat was learning to polka with an elephant late at night, or at least that's what it sounded like...