"I have cried twice in my life - once, when I was seven and I was hit by a school bus, and then again when I heard that Li’l Sebastian passed," declared Ron Swanson from 'Parks & Rec'.

That, sadly, was the last we saw of the miniature horse Li'l Sebastian. Until now.

In a tweet posted by D'Arcy Carden, who plays Janet on 'The Good Place', Li'l Sebastian has been re-introduced into our lives. The tweet doesn't reveal much, but it's just one of several 'Parks & Rec' crossovers that have taken place in the series.

Ads for Jean Ralphio's champagne, Dennis Feinstein's aftershave and even a safe with Ron Swanson's name on it has turned up in 'The Good Place', all of it implying that there's a shared universe between the two TV series.

So far, NBC and Fremulon - the production company behind 'The Good Place' and 'Parks & Rec' - have neither confirmed nor denied the theory, or explained Li'l Sebastian's presence.

Our guess? Because they're preparing for a musical moment that will top this.