Sure, your fancy coffee mug holds coffee. But is it milled from a solid chunk of T6 aluminium? Does it have three Mil-Spec 1913 scope rails for attaching laser sights and night vision? Does it pack a CAA light, AR15 handle and stabilising bipod? No it does not.
The OPMOD Battle Mug has all these things. And it costs $250.
It is very silly indeed.