A retro 500 ml Friends heat changing mug reveals two different images depending upon the temperature of the mug. When cold it features a sleek black design on a retro tv with the shows logo. This mug then transforms when hot liquid is added, revealing the shows cast on the screen. On the reverse of the mug is an image of the sofa that the cast often appear on and includes the words 'I would rather be watching Friends'. Once the mug cools it will return to its original state.