Haha, good one, buddy! You may have a natural talent in finding pranks without even trying! 😂

This really sucks, mate. As a mug collector, I learn the hard way too sometimes. For your mug, try using a pipe cleaner or something to get into those tight spots. Be careful not to scratch the glaze!

I'd just return it if you can. Not worth the headache of potentially drinking coffee sludge. Yuck.

How bizarre! It might be possible to clean your mug with a denture cleaning tablet. It's good at getting into hard-to-reach places and cleaning out gunk. Just make sure to rinse it well.

Oh great, another pointless design. What's next, sippy cups that leak for fun?

Actually, the labyrinth design could be an intentional anti-microbial feature. The concept is like sharks' skin, which is covered in tiny teeth-like scales called denticles. The texture creates a less hospitable environment for nasties. Don't quote me on that though, I could be totally wrong!

Man, that's hella annoying. If you are stubborn enough, a toothbrush might be the only way. Good luck!

Isn't it ridiculous how function comes after form in product design these days? This mug failure exemplifies the classic problem of prioritizing aesthetics over usability. This falls right into what Don Norman talks about in his book 'The Design of Everyday Things'. We're sacrificing practicality for novelty and it's high time companies realise their approach is fundamentally wrong. I feel your pain, OP.