unless you put wet buds into cold storage, nothing is going to happen, they will just get crispy like some people like them. freezing or chilling wet buds is not a good idea because they will get moldy. the only time it is OK to store wet buds in a cold place is when they are sealed in a freezer bag

as far as the pipe goes... a chipped mouthpiece shouldnt affect your ability to get high. unless it is somehow obstructing the path of the smoke into your lungs then i don't know whats goin on with your stuff