So what does a 'stable hand' do ?

Well what I should do is groom the horses, maintain the saddles and bridles,
And muck out the stalls - but I never do the mucking out bit ...

So why don't you muck out ?

It's a horrible job - so I do a 'trade off' with one of the lads.

Sounds interesting ...

It's more stimulating than interesting !
Given the choice, I'd always prefer to be fucked silly by a strapping young lad, than shovel shit all afternoon. In fact, I'd shag'em even if they didn't trade.
But don't tell them.