Yes, in fact you are. When you consume these drugs through smoke and sniffing you are in fact KILLING yourself very slowly to the point, you don't even realize you're consuming acid and other chemicals your body should not be exposed to, but unfortunately you think it's so cool to do this you're body has no control over what YOU decide.
The most common influence on drugs is movies, music videos, and unfortunately "role models". But what's portrayed as students who don't choose not to smoke weed, there's a fair percentage of teens and kids who make the choice of NOT to kill themselves slowly. Now, I'm not telling you smoking weed is a bad choice, I'm telling you smoking weed is stupid, idiotic, retarded, dumb, and technically suicide. Tell me, is that the right choice to make for yourself and others? I hope not.
                       
                       What's in this stuff?

Well what's in marijuana? Let's see (count on your fingers). There's tetrahydrocannabinol, and some 400 chemicals in it, unfortunately. Tetrahydrocannabinol is a major component in Marijuana, The major active component of marijuana could enhance the ability of the virus that causes Kaposi's sarcoma to infect cells and multiply. Kaposi's Sarcoma is a type of virus that can affect the body's system and can also cause cancer. Although KS is a well established virus to be BAD for you, it is lacking widespread to tell you what it is. 
"What are the Risks?" Pot affects a user’s judgment, motor coordination, and short-term memory.  Weed can cause increased heart rate and make some users extremely anxious or paranoid.  Smoking marijuana also causes some changes in the brain similar to those caused by long-term use of cocaine and heroin. 
Meth? mm..what's in that? Methamphetamine, or meth, is a synthetic chemical that acts as a stimulant. It is snorted, injected, smoked or swallowed.  Users experience a rush that lasts only a few minutes. Taking Meth may make you more hyper and less "lazy" as everyone might claim you to be, but look at this way, it creates a sense of energy that makes your body want to move faster than it actually is supposed to be, while doing this, it increases the heart rate, blood pressure, and mood disorders, and likely to cause a risk of stroke. If you think, you can smoke meth in front of your parents and no one notice ehh..WRONG! If your jumpy, you stink like smoke, and your eyes are red you better change your mind and stick with eating the right foods if you want to be that jumpy and excited.