The act of carrying and drinking an alcoholic beverage from a flask, a metal container for storing a small amount of liquor, typically to be carried in one's pocket.
by Djazflo January 14, 2024

The act of inserting a flask with liquor (preferably) inside one’s anal cavity and then pouring it down your partners mouth.
by Flask master March 5, 2025

A type a water bottle vsco girls use. If you disrespect them they will hit the hell outta of you. DON'T DO IT
SAY THAT AGAIN AND I'LL HIT YOU WITH MY HYDRO FLASK *throws hydro flask TAKE THAT! SaVe ThE tUrTlEs sksksk and i oop
by VscoGirlMeanings October 5, 2019

by raesironen April 12, 2019

by Coffee Chimp February 10, 2022

A flask you keep in your back pocket to take out and pass around when shit gets boring. (So always) Good for church, school, work, family occasions, funerals ect.
Person 1: This church lunch is so boring!
Person 2: I know right? Lucky for you I always got me trusty booty flask!
Person 2: I know right? Lucky for you I always got me trusty booty flask!
by THE OLD SCHOOLER December 1, 2018

After I put the tape over my webcam, I got carried away and started hydro-flasking my entire laptop.
by FresnoNightcrawler March 14, 2019
