Steal the huge black draft horse

You slowly take the horse, prepare the bridles, and open the wooden door, the huge black draft horse obeys you, its heavy muscles start to move, a bit slow... but it's a solid animal.

You listen to a raspy drunken voice "THIEF!! THIEEEF!!!"

A farmer runs outside the stables and keeps shouting, the ale is sloshing from his mug as he points at you.

Some people come out of their homes. The horse is too slow, far too slow.
Suddenly, you feel a searing pain in your back.

The arrow strikes high in your back, punching through your flesh with brutal ****. You can breathe, and you fall from the horse.
The last thing you see before darkness takes you is the bandit leader asking a shady guy to heal you.

"Should’ve used my magic... damn drunk peasants..." You think, and then, everything is dark.

You wake up, the pain is gone.
There is no light, you are underground, and you are dressed in an absurd bride dress, and you try to remove it, but a group of men enters the place

You try to cast a spell but your magic fades, the choker of the dress absorbs your powers.

The bandit leader, a tall brute with a scarred face walks toward you. "Pretty thief, thought you could take my beast and my loot? I will allow you to save your life, because you are a stranger, and you don't know anything about me."

His men laugh when he throws you a bouquet and 3 iron buckets "If you fill the 3 buckets with horse cum, and you manage to swallow a whole bucket, I will let you go"

If not, I will discard you and the guards will never find your dead body.
He can't be serious... this is a joke...

But he doesn't laugh, and one of the guys takes out a rusty dagger and points you at it.

You can follow his orders and trust him, or you can die with dignity.