It’s never nice to see anyone being adversely affected by drugs. And the same rule applies to penguins as it does to humans.
This penguin is either the happiest penguin in the world, as suggested by the title of the video, or one that has found a way of sneaking drugs into the enclosure. If it’s the latter, he isn’t sharing, however.
It’s bizarre how this penguin is jumping and dancing around while every other penguin is just standing around looking bored. They’re probably whispering about him behind their flippers, asking each other what the hell he has been smoking.
To me it just looks like he is cold and trying to warm himself up. Not that penguins are likely to feel the cold, you understand. If it isn’t that then it must be the drugs. Can I have some of what he’s having?