Egg shells. Let's talk about them. I've always heard you should never put them down the garbage disposal and followed that advice, but never really saw a first hand demonstration as to why like I did the other day. I was making eggs the other day at the stove and as I was cracking them, the garbage was full, so I just tossed them on a plate that was sitting next to the sink. I came back like 2 days later to do the dishes and when I went to brush the egg shells off into the trash can, the bottoms of the shells would not come off the plate. Like at all. I took a butter knife and tried to chip at those things like it was an ice pick chipping ice and they just would not budge. I was absolutely shocked. The calcium of the shells plus I assume the egg white mixed and dried into some of the strongest glue I'd ever seen. I had to soak the plate in scalding hot water to get them to finally budge. Then it became clear...can you imagine what they do in your pipes?? Don't do it! Ever!