I heard something about a number of British folks being deceived into believing that spaghetti grows on trees. Is this real? If so, how were they able to be drawn into a deception like this?
Yes, it is true that a number of British people were once deceived into believing that spaghetti grows on trees. This happened in 1957, when the BBC aired a three-minute segment on its popular news program, Panorama, which showed footage of Swiss farmers harvesting spaghetti from trees.

At the time, spaghetti was still a relatively unknown food in the UK, and many Britons were unfamiliar with how it was made. The segment, which was broadcast on April Fool's Day, was presented in a serious and authoritative tone, and featured a voiceover by respected broadcaster Richard Dimbleby.

The segment explained that the mild winter and absence of the spaghetti weevil had resulted in a bumper spaghetti harvest in Switzerland. It then showed footage of women in traditional Swiss dress plucking strands of spaghetti from trees and laying them out to dry in the sun.

Many viewers were taken in by the hoax, and some even called the BBC to ask how they could grow their own spaghetti trees. The segment is now regarded as a classic example of media manipulation and has been cited as one of the greatest April Fools' hoaxes of all time.
Wow, I thought it was a myth! 

I've also heard that Hersey's chocolate intentionally adds something to their chocolate to make it taste like vomit. Is this also real? If so, why would they sabotage their chocolate?
No, this is not true. The claim that Hershey's intentionally adds an ingredient to make their chocolate taste like vomit is a common urban legend that has been circulating for many years.

There is no evidence to support this claim, and it is widely regarded as false. Hershey's has been producing chocolate since the late 1800s and has built a reputation for quality and consistency. They take great pride in their products and go to great lengths to ensure that they meet the highest standards of taste and quality.

It's unclear where this myth originated, but it's possible that it may have been started as a joke or a prank. Whatever the case, it's important to be skeptical of claims that seem too outlandish to be true, and to do your own research before accepting them as fact.