Why did the baker have brown hands?

Because he burned them when taking sausage rolls out of the oven without taking the appropriate precautions. Take heed.

Why was 6 afraid of 7?

It wasn't. 6 is a number. Numbers are not sentient. (shamelessly nicked from sickipedia)

Whats yellow and dangerous?

A wasp.

A chinese man goes to work on a building site.

Turning up on the first day he asks the foreman what he will be doing. "Supplies", replies the foreman. The Chinese man goes to work in the supply department where he is primarily responsible for issuing the companies staff with correct safety equipment and job-relevant tools. It's a role he really enjoys and proves to be exceptional at.

A horse walks into a bar.

The barman looks at it and says "Blimey! Cheryl, you segregate it from the lounge area and I'll try and herd it back outside". (submitted by Druid of b3ta)

A ghost walks into a bar.

The barman doesn't respond, even when the ghost tries to order a drink. The ghost suddenly realises that because it has no physical presence, not only can the barman not hear it, it would be unable to taste or even hold a drink. It feels very silly. (submitted by Woodside from b3ta)

How do you turn a duck into a soul singer?

In all honesty, it's not really feasible. The pitch and range of a ducks quack is more than likely insufficient to fulfil the subtle and delicate vocal style needed for the Soul genre.