Both of Andrew's top front teeth were loose. His permanent tooth was coming in, so the tooth on the left was starting to stick straight out, but it wasn't loose enough for him to pull it out.
Then he went rollerskating. He fell down and jerked his head back so hard that he knocked one tooth out and loosened the other one.
Then he looked like this:
After two days of wiggling the other front tooth, which was barely hanging on, he finally lost it and he looked like this:
And that is how he lost two teeth in one week. :-)