a party that includes alcoholic beverages.

Where you get drunk and be somebody.

Something I never get invited to.

The Party of NO! is a name the Republican Party earned as a result of voting NO on any proposal brought up in Washington by the Majority Democrats since January 2009.
The G.O.P. is so twisted by hate for President Barack Obama that they refuse to cooperate in anyway with Democrats. They continue to vote against Democrats' ideas while not presenting any good alternative ideas of their own.

a group of people socializing on purpose

A slang term used primarily in the gay community to identify others who are looking for sexual encounters involving crystal methamphetamine. The 'T' is uniquely and intentionally capitalized to denote 'Tina,' another slang term for the drug.

A party is a social gathering where you and classmates from college, family, or friends dance to music, guys dance with girls, and drink fruit punch spiked with alcohol and sometimes drink shots of vodka or jello shots and drink beer. There's also food, chips, soda, and sometimes energy drinks. Some parties not only have alcohol, but also have blue speed, Modafinil, Arecoline Hydrobromide, 2-methyl-2-butanol, Methiopropamine, 3-Fluoroamphetamine, Selegiline, D,L-Deprenyl, and sometimes blue Molly. Don't mix Kratom with anything else. Some parties have candy. Most parties have alcohol (ethanol) and music and energy drinks but no drugs. Though party is also slang for people who use drugs like kratom, weed, blue speed, Arecoline Hydrobromide, Modafinil (even though Modafinil doesn't make you high but just keeps you awake), and blue molly.

When everyone gets together at someone's house, get drunk, consume illegal substances like weed and coke, and trash the place completely.

When you are excited about something.