Etoh

[Justin Bieber]

Chemical abbreviation for ethyl alcohol; another synonym for alcohol or booze.

[Couch Potatoe]

Ethyl hydrate, also known as ethyl [alcohol]. Is used as a taste enhancer in drinks. Has the unfortunate side effect of producing intoxication if abused.
The Five Stages of Alcohol Intoxication:

Smart --- youve just had two drinks, and feel as if youve become an expert on all things relating to the universe.
Rich --- youve had another drink, and now feel that girls will be attracted to you because you are now a millionaire and own a mansion and a yacht.
Good-looking --- youve had five drinks in total, and know that you are as pretty as a picture. You also may believe that everyone is also as pretty as a picture --- of an ape! In Europe, this is the target stage of drunkenness.
Bullet-proof --- this is when you really should quit drinking. Youve had seven or eight drinks already, and feel that you could go to the leanest, meanest biker in the bar, flip him off, and walk away without a scratch because you have super-secret government body armour. In America, this is the target stage of drunkenness.
Invisible --- STOP DRINKING, YOU IDIOT. Youve had well over ten drinks, and feel that you can dance naked on the street or on tables, and no-one, but the person youre trying to impress, will see you. You dont need to hide from the people who want to fight you, as you cant be seen. And you can walk down the street singing the latest hip-hop song because no-one can see or hear you and you know all the words anyway.

[Mark Zuckerberg]

Grain alcohol, or the kind of alcohol in beer, wine and liquor. The short form EtOH is used by chemists to refer to the chemical, and medical doctors to refer to alcoholic beverages or the consumption thereof.
The term comes from organic chemistry nomenclature. Specifically, the Et refers to the ethyl group in grain alcohol, while the OH refers to the hydroxyl part of grain alcohol.