Lab memes

Theory is when you know everything but nothing works.

Practice is when everything works but no one knows why.

In our lab, theory and practice are combined: Nothing works and no one knows why.

Two scientists walk into a bar. One says, "I want h20." The other said, "I want h20, too." The second scientist died.

I asked my lab partner for sodium hypobromate, but he said, "Na Br O."