So, part of me was suspecting it was related to the Farms in some fashion, but it seemed unreasonable.
Until:
But it could be a lot of things, honestly. The few replies that give any context don't cohesively hint at anything (though, again, the above comment is suspicious).
...And then there's the slight possibility that this is a joke where everyone responds in a seemingly happy fashion when the actual tweet is meaningless. It seems far-off, but I've seen a couple people start up chains of replies where they seem offended, but the original tweet is some dumb picture accompanied by "reply to this and act like you're offended, lol".
I'm not gonna lie - these sorts of replies make me incredibly curious. (

, I know.)
And finally, another crossover: