[LaLaLand]

I thought it was where you do the sliding hands thing with someone... I'll explain...

1. Find someone with two hands...
2. Hold your hands together with your fingers stretched out but closed together (no gaps) and with your thumbs pointing up.
3. Get other person to do the same but horizontally and get them to do the Trekky "V" sign (separating your middle finger from your finger next to your little finger)
4. Do the same action and slide your "v" into their "v"
5. Get the other person to open their hands up.

It looks like a vagina.