sixpenceee:These yellow and blue blocks appear to move one after the other, right?When the black bars are removed, you’ll see that they’re always parallel and that the black bars are distorting your brain’s perception of movement. (Source)

choking | chris diamond gifs | Shemale_Big_Cock

sixpenceee:These yellow and blue blocks appear to move one after the other, right?When the black bars are removed, you’ll see that they’re always parallel and that the black bars are distorting your brain’s perception of movement. (Source)

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