Yonic seems to be from Sanskrit word 'Yoni' meaning vagina, I think. It looks like a satirical post.

A major part of being an MBA is coming up with words for stuff everyone already knows.

My work has "gemba walks" which is where managers leave their office and ask employees if there are any issues that need to be addressed. They also practice "5S" which is where they make sure the tools workers need to do their job are located near where the job is done. Might as well practice "kawaya" or the idea that employees are provided areas to relieve themselves instead of pissing in bottles.

Phallic is a word to describe something that is 'penis-like'. Yonic describes things that are 'vagina-like'. These terms have legitimate use.

At face value, I don't think this linkedin page is deserving of ridicule. But I'm not sure what the context around it is.

The cylinder must not be damaged.

The kind of band where the bass player doesn't touch the lowest two strings and doesn't play fewer than 16 notes a bar

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There you go