What's the Jeff?

I was on holiday with my family recently. And my mom just suddenly is like lying on a lylo and out of nowhere goes. Who's got their foot up midge off? I've never heard Jeff before. So if Rocky wants to use Jeff at any point in any books, I just thought it was Jean. He just really killed me. It is quite fitting though for the next chapter. Do you remember what it's called? No. Oh no. Clip talk. Yes, exactly. The Jeff. Up the Jeff. Is it on the Jeff or in the Jeff? It's difficult to know because I'm not completely sure what Jeff is. Have we all got Jeff