Friends - 'They Don't Know' Heat Changing Mug

Friends - 'They Don't Know' Heat Changing Mug

Any Friends fan will instantly recognise the well known phrase that this mug displays!  When cold, this standard size mug is black in colour and has the phrase ‘THEY DON’T KNOW’.   Simply add your favourite hot beverage, and the mug will change colour to bright blue and read the words - ‘THEY DON’T KNOW, THAT WE KNOW THEY KNOW WE KNOW…’.

This is a perfect gift for any lover of the show, ideal for both birthdays and Christmas.  

This mug is an officially licensed Friends product.  It comes boxed.