a hippocornamus is a cross between a hippopotamus and a unicorn. They are most commenly drawn black and white, but in rare cases they can be rainbow. Also, sometimes they can fly.
An enormous hypocrite. Someone that has reached such extreme levels of hypocrisy that it is all prevailing, dangerous and out of control, like a rampaging hippopotamus.
I can't believe you put cheese on your vegan burger, you're such a hippocrotamus!
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.