Your point of view looking through the metal glasses they use in optometrists to test your eyesight - in the left frame there's a green-tinged picture of someone giving a one-handed hand job, in the right is a blue-tinged picture of a two-handed hand job
https://files.mastodon.social/media_attachments/files/111/158/857/541/962/196/original/20141d3c692b8229.png