Some people believe that breaking red or green glass, or even shattering a whole glass bottle instead of a cup or other vessel, is bad luck. Some tribes consider breaking a glass in the middle of a toast to be bad luck. There are many myths like this one around, so it's best not to worry about them.
Breaking glass is not a sign of good fortune; it is a sign of bad fortune. Breaking glass, according to superstition, will ward off bad luck. Breaking glass without any (bad luck) antecedent is said to result in just bad luck. The reason for this belief is that if you break something valuable, such as glass, you will be plagued by misfortune.
The word "antecedent" is used here to describe something that has happened or will happen before the arrival of some kind of trouble. In this case, the trouble is broken glass that threatens to bring about poor health or an accident. An example of previous trouble would be someone having been injured by a piece of broken glass earlier in the day. This would make them susceptible to being harmed by further broken glass.
In conclusion, breaking glass is seen as bad luck because it means you have been victim to misfortune previously and are now being warned that more bad luck is on its way.
"A glass breaking in your home indicates that good fortune is on its way. It doesn't work that way if you shatter glass on purpose, but if you break some glass by mistake, it symbolizes evil is leaving your house and good luck is on its way."
Drinking from a broken cup: this is considered as bad luck. The reason is that when you break something, you are destroying the perfect symmetry of the object, which means that part of its soul has been lost. If you were to drink from such a cup, you would be taking away part of what made the glass special in the first place. This would be like killing an animal right after hunting it so you can eat it. It isn't right because even though animals should be used for food, they still have souls that need to be saved before they die.
If you were to drink from a broken cup, it would be equivalent to killing an animal and then eating it. This is not only wrong, but it also brings bad luck because it is seen as destroying part of the universe.
Toasting with water is said to be unlucky. It's also considered bad luck to return an alcoholic glass to the table (thus drinking bottoms up is good luck). The latecomer is required to consume a shot or a glass of drinks (alcohol, of course).
It is believed that if you drink alcohol as part of your farewell ceremony, then you will have terrible luck finding work in another company. Also, people will think that you are too lazy to keep your job so it is best to hide your bad luck by not drinking at work parties or events where there is a chance you might be asked to toast others' successes.
Drinking to honor someone's death is also thought to bring about misfortune. This is why some countries don't allow funerals to be drunk for fear of causing more death and suffering.
Finally, it is also believed that drinking beer on Thursday is bad luck because Friday is the day workers get their wages. If you do drink beer on Thursday, you should also wear black armbands to show respect for the dead.
These are just some of the many traditions related to alcohol that exist around the world.
Another reported source of ill luck is breaking a mirror. Because mirrors were formerly scarce and expensive, shattering one meant doing without, saving for another, and waiting. This was a disaster. Also, smashing a mirror frequently resulted in pieces of glass all over the floor. This could lead to serious foot problems for anyone who walked over it.
In Europe, where glass had become more common, people began breaking mirrors as a form of protest or out of malice. In England, where public shaming was used instead, protesters would break windows of homes of wealthy individuals they disliked. This led to a new term "to break wind under the mistletoe" which we still use today. This practice ended after the death of John Winston Churchill, who suffered from multiple sclerosis; some have speculated that he died because he broke wind too loudly, which caused him to be ridiculed by society at large and destroyed his reputation.
In America, protests are done differently. In this country, people prefer to sit behind computers typing insults about others. These trolls will often break mirrors when they get angry or upset. The Internet has created a world where everyone can be famous if they try hard enough. If you break lots of mirrors, you will be hated by many, which will probably cause you to stop breaking mirrors entirely. However, people will still hate you, which means that you will still be famous even though no one sees you anymore.