Ok, this is how I do it (secret revealed):
At the top of your reply when you choose to quote it says: "Quote, Originally posted by, etc. which includes the codes for italics and bold and "quote". You copy
that bit,
then cut and paste the text you want to use in your multiple quote (and change the username if necessary), then at the end of your second quote, you copy the end tags for bold and "quote". And then you've got it. I'm not sure if this is a good explanation, but it's my best shot. Hope this makes sense.
BTW, LOL at Emfa!