chubby unicorns

I saw a meme that exhorted us to save the chubby unicorns (rhinos).

I tried to see the omen (comet NEOWISE) but there were clouds in that part of the sky and it was possibly too bright anyway. There are other days this week to try again. If I don't, I can enjoy other people's, like the great one over Stonehenge. 

Any word on what this omen is supposed to mean?