I Shit Rainbows heat reactive mug

These cheeky mugs make great gifts! They are specially coated with a heat reactive layer, so while they look like a standard black mug, once they heat up the black clears to reveal the image underneath.

This mug reads I shit rainbows, and has a unicorn pooping, well a rainbow.

Please note due to their special coating these mugs are not dishwasher suitable, and will require hand washing.