![1girl ? alterna99 azur_lane bangs bikini breasts cleavage detached_sleeves earrings eyebrows_visible_through_hair fluttering_heart_illusion formidable_(azur_lane) hair_ribbon highres jewelry looking_at_viewer nail_polish navel nipples optical_illusion ribbon simple_background solo spoken_question_mark swimsuit thighhighs white_background rating:q score:17 post #3740088](/cdn_image/preview/b4/d3/b4d3a1a2ee3711825d6037d4f354874d.jpg)
fluttering heart illusion
An optical illusion in which an image, when overlaid with a certain semi-transparent template, will appear to move when the whole image is shaken.
The illusion became a Twitter meme in September 2019. Images with this template are intended to be viewed on a smartphone and shaken to cause part of the image to bounce or jiggle.