Can you send me another link of the demonstration please?
I really want to try this out.
This is not the original video but it’s the same concept. Cucumber was recasted with a stunt dildo 
https://mega.nz/file/QwVxgDhJ#4pD6zE7VJIydjvfSn-EzSCn3Qf35ttHtXRyXrHmwOsw
Not sure it’s worth the stunt and emersion, licking is not the high sensation thing anyways it’s more like a tease and extend or pause. Just leave it inside and script what you see without overexaggerating and you get the same.