Simon and River wish you all a very safe and Happy New Year's Eve! Don't do anything they wouldn't do.
...On second thought, don't do anything Simon wouldn't do.
For some reason, when I saw her doing this I immediately thought of a little kid showing someone where their belly button is. Given that it's New Year's eve, it could also pass for a bunny version of a field sobriety test--if the bunny falls over, they've had too many banana daiquiris.
We hope you all have a happy and safe countdown to the New Year!