In "Momma Mia," the first episode of Frasier's seventh season, Frasier picks up and later dates a children's book author. When they meet, Frasier asks her out to lunch and quotes a line from one of her books, "Well, as a wise woman once wrote, 'No cookie jar is up too high for a panda who will try and try.'" To that, the author, played by Rita Wilson, says, "Now you're scaring me." (Frasier is the last person to realize that this children's book author looks exactly like his late mother.)
I found the episode online- you can watch it here. Zip to 2:55 to see the part where Frasier uses that awkward pick-up line.
If you were single, how would you react if one of your fans approached you out in public and asked you out? Would it make a difference if the fan was extremely attractive or intelligent? What is the oddest pick-up line you've ever heard?