Today was my worst. I had just finished pitching the yeast in and aerating my colonial ipa in a glass carboy. So I put the airlock & stopper in, and go to put it in my brew closet. Well my closet was full of kegs and a c02 tank, so i set the carboy down and pick up the tank to move it, and i barley tap the carboy with the tank. GUSH. It broke the carboy. Very depressing, but i have learned my lesson, I am going to be 100 times more careful with carboys from now on.