if you click the Quote button next to the Report button (at the top of somebody's post), it will bring up a reply page, and if you scroll down just above the Reply & Preview Reply, you'll see their entire post has automatically been added to a quote text box.
or, if you are typing a quote directly into the text of your post,
typing this (without the spaces in the QUOTE brackets):
[ QUOTE ] desmobob owes me money dammit [ /QUOTE ]
will produce this:
| desmobob owes me money dammit |