mysterious extra *rows*

[lavender-erez]

Hi - I've been knitting for a few years, so I like to think I'm pretty good at it. However, I just ran across something and am totally baffled. I'm knitting in stockinette, and somehow, (on the right side) I've just finished row 4 at the right end of the needle, and row 8 at the left end. Where did those 4 extra rows come from? How did I do that? Is this something that can be done on purpose?

Thanks for any insight.

[Susan P.]

Just for clarification..you're using circs rather than straights? (needles)