Thirst bomb is the accidental successor of "thirst ball". Thirst ball was originally used to describe someone super eager, or relentless to achieve or obtain something. Unfortunately many people misunderstood the original word phrase and replaced it with "thirst bomb".
Most of those girls on Instagram are "thirst bombs" / "thirst balls"
The act of closing oneself into a room at a friend's house or apartment with a full bottle of Frbreeze and expending the entire contents of the bottle in the room.
I closed myself In Jesse'sbathroom and Febreeze bombed the shit out of that bitch.