What does the Horsey Emoji Mean?

I till now don't know what's the actual meaning of horsey? someone told me it means happy someone said it means sad?
Can anyone tell me? What does the HORSEY EMOJI mean?

it means horsey

Why would we want to react with a horse? on a forum?

To show that you have read the message, something mixed, which cannot be expressed in something basic or simply when horsey is mentioned in something

Agree.

Ok thanks.