A female farts and the expelled air is unable to escape via the buttocks/backside. This situation leaves only one route for the expelled air to surface and that is between the vagina labia which results in a vajayjay bubble or, vajubble.
"That fart came out the front instead of my back side, I think it was a vajubble!"
A "human" that spends so much time playing video games that their posture is level nerd neck. Everytime anyone goes tryhard they hunch down and their neck gets longer there fore a nerd neck is always hunched down cause they're always going try hard. In other words a nerd neck is a try hard, since their neck is 100% longer than the average human being due to playing too many video games and taking them serious, nerd necks are not even considered human anymore but something more sad. Nerd necks are often found on fortnite, their natural habitat usually being tilted towers.