OK - if you want to profit from this here, listen to Phoebe first. Do not scroll down. :-)
::: Idiom Puzzle :::
... but you can not make him drink.
What does it mean ?
People, like horses, will only do what they have a mind to do.
You can give someone the opportunity to do something, but you cannot force them to do it if they do not want to.
'I showed her so many tricks how to learn her new vocabulary, but she never tried any of them. Well, you can lead a horse to water, but you can not make him drink.'