Following into the Bathroom

Ben Azai entered a bathroom after
Rabbi Akiva, and I learned 3 things
from observing his behavior:

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1) I learned that one should not
defecate while facing east and west,
but rather while facing north and south;

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2) I learned that one should not
uncover himself while standing,
but instead while sitting;

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3) I learned that one should not
wipe with his right hand, but with his left.

Yehuda:	You were impertinent to your teacher to that extent?
Ben Azzai:	It is Torah, and I must learn.