Top Definition
Photosynthetic-chemical-sweat-sunlight-induced rash on a boy named Chris.
A kid named "Chris" that lovingly helps his mom on Mother's Day in the garden pulling weeds, wiping the sweat from his brow for hours in the hot sun, that then develops a strange and undiagnosable rash from the unknown chemical combination from the plants mixing with the sweat and the sunlight. So strange, in fact, that FIVE senior dermatologist are completely stumped by the rash covering his face, ears, neck, chest, and arms.

To make light of the rash at school, he calls himself PhotosyntheChris.
by PhotosyntheChris' Mom December 04, 2011

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