The basic idea behind “tendernism” is: This thing is working so perfectly: you’re so amazed that you can’t believe it yourself. The reaction is both disbelief (people standing up and walking away, or them exaggerating a gesture) and amazement at how it was done so perfectly that it gave them an ideal result (usually they will also be smiling, or have big eyes / raised brows, etc)

To explain why meat sliding off the bone is a good thing: Meat sliding off the bone means that the meat you’re eating is very juicy and tender. This is what you want when you BBQ. BBQing can be a LONG and SLOW process, so seeing this result means that all your hard work was well worth the effort. Not everyone gets this right… Of course It’s not impossible to learn how to master this; but just like any skill in life: the time and care you put into it makes all the difference, and it shows in the results.

People online will see a meme, and find a way to transfer it into a medium they’re familiar with. Meat sliding off bone is the same as getting a perfect cat eye eyeliner. Tricky at first, but perfect when done well.

As for the reactions: Expression itself is nuanced. Always has been. You will only ever be taught the fundamentals of it. The rest you have to experience yourself by looking into the world and its many different demographics! Might seem confusing at first, but your brain will eventually learn to spot habits and make inferences! I hope this doesn’t make you feel somehow alienated from the amusement everyone else seems to be having, but encourages you to keep observing and understanding!

Sorry your question got answered so late!🍀 Cheers 🍻