distortion definition

when the straight lines of an image appear to be deformed or curved unnaturally.creating different distortion types, including barrel, pincushion, and waveform. 

this image is is showing some distortion because basically theirs a watermelon behind the glasses and the glasses are making the watermelon look different for example the the watermelon is perfect shape then the glasses are making it look upside down, upright, smaller and bigger i  think the bigger the glass the more big it is. i think that this is actually real and they its not photo-shopped.

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