The problem with that episode is that they didn't make Okana convincingly likable. His pickup line to Terri Hatcher was embarrassing and obviously written by people who've never personally had success flirting with women. It wasn't believable that everyone thought he was so cool and that he was good at picking up women.
He would have been more believable with, "Hi, I am Okona and I have a twelve inch penis. Wanna see?" Then at least Terri Hatcher would have a plausible reason for falling for him.