How can you skid / How to do skids / skidding

Random thing to ask, I know, I can do it perfectly well thankyou. But my girlfriend just got a fixie, and after getting on wel with it just riding around, she's determined to learn how to skid, after a few attempts, she's deemed it impossible. I've tried helping her by telling her the basic idea, ie get your weight over the front & off the back, put reverse pressue on the wheel & lock up your legs, she just can't seem to do it. Any tips on how to help her practice?

Tim, my boyfriend taught me, there was no arguing. I learned on the "trixie chix" court on columbia road which is a great surface (slightly soft and smooth) and where 90% of the women here learned.

-Mike's winning tip for me was to try to lean forward over the handlebars far enough to look under the front wheel. The leaning forward part is the hard part (general consensus). Most of the ladies got the skidding part but couldn't make the skid last for long because of not much weight distribution.

-Also pulling up with your strong foot I think is much more important than the "locking of knees". The knee locking thing is more likely to lead to the feeling of/actuality of being thrown over the bars or sore knees.

-pulling up/pushing down when your feet are at 3 and 6 o'clock.

-speed is best, and the faster the better.

-Our muscles have a 'memory' of positions so hold the bike for her while she just stands in place in the correct skidding position, so she can feel the position she's trying to achieve.