is it safe to eat the cob of the corn?

sure but your body cannot digest it so it will go straight through you.

yes, it's perfectly safe to eat the cob but better to chop into chunks and steam further beforehand because the kernels have stopped the steam or water from getting to it. i do the same with cauliflower, broccoli and other tough stems rather than add them to the compost heap.

i mean does it give u any kind of stomach pains

It isn't poisonous or anything but it is very tough and indigestible so its not really a very good idea

It's safe but you should not eat that

Safe, yes. Palatable, not so much.

It MIGHT be harder to digest, but you won't feel it,.
Also I don't think it will be very yummy hahaha