What Jenny Does with her Spare Time by @fragmented_imagination (B Sanders)

Jenny, the anthropomorphism of "White Fantasy", likes to screw with her media. In this case, not only is she fully aware that she's in a comic, she takes advantage of it by drawing a mustache on the poor guy in the last frame. Her and her stories specialize in poking fun at the fourth wall whenever they can. One character is quoted telling another "You're a fictional character; you don't use the bathroom".