Look at the bottom of the post that you want to qoute. Go to the right hand where you see a quotation symbol above the remark. When you hover your mouse over it, you will see a pop up that says "multi-quote". Click that box and it will light up in orange. Do that with the other posts that you want to quote.
Then hit reply and all those posts you marked will come up in order in a reply box. You can then respond as you like.
(And no, you're not a moron. Or we both are.
I had more posts than you before I figured it out.)