I laughed once.
"Rubber encased, titanium die with a mercury core. Guaranteed to produce a random result every time!"
Firstly, because there's no discernible way to guarantee randomness (because if it works, it should be random, hence unable to predict, so no way to compare it to other random results, therefore no way to prove it's validity).
Secondly, because I know D&D nerds just like that (one guy even has titanium dice)!
"Rubber encased, titanium die with a mercury core. Guaranteed to produce a random result every time!"
Firstly, because there's no discernible way to guarantee randomness (because if it works, it should be random, hence unable to predict, so no way to compare it to other random results, therefore no way to prove it's validity).
Secondly, because I know D&D nerds just like that (one guy even has titanium dice)!