On Wed, 29 Sep 1999, Damien wrote:

First is Washu (OAV) would not do this to Tenchi without his prior
permission. She is somewhat saner than her T.V. counter part. Taking a
"sample" from him is one thing. It's not much of a leap to believe he
would enjoy that, though he wouldn't admit.

Taking sperm samples from someone because you know they enjoy it even though
they say they don't is known as rape.

Also remember Washuu hung Ryouko up at the end of episode 13 until she
cried.