Random Fact #16: If you put a package of gum through a cycle in the dryer, the sticks of gum will curl up into a U shape and turn hard as rock.
Source: Personal Observation
Note: NO, I didn't accidentally put gum in the dryer with my clothes! I actually opened up a dryer and found it there one day. It was quite odd. I'm not sure why the gum got left in there... I bet the person's clothes smell minty fresh now. Unfortunately, I didn't think to take a picture until after I'd thrown the gum away.