In the Robin 2160 (never tried in anything else) if you pull up to the vertical, centre the controls (and keep them centred, hard) and wait then you'll pitch forward or backwards through 180 degrees once you run out of airspeed - you don't really seem to tailslide far. It's not a controlled manoeuvre, although it is rather fun...
(edit: you keep the controls centred to stop them banging against the stops as the airflow reverses ... which would be a Bad Thing)