1 definition by MyanAimee
A given person between the age of 12-19ish that has little desire or care of actualy producing anything other then an instagram shot and could give even less fucks about the world around them then a millennial.
A group of twellenial girls covered in body glitter blocked the sidewalk as they posed for Instagram shots on their new iPhone Xs.
by MyanAimee August 10, 2018