A metal water bottle that vsco girls have claimed as part of their "culture" and covered with stickers. Can be conveniently used as a weapon to knock these annoying pieces of shit unconcious.
Stupid girl: wow you have a hydroflask sksksksksks
Me: *swings bottle like a hammer knocking this bitch into next week*
An overpriced metal canister (or flask) that comes in a variety of colors and contains water (or any type of liquid). It dents easily. Often decorated with stickers. Mainly owned my "VSCO" girls.
That VSCO girl brought her hydroflask to school and dropped it. And I oop-