Well,
the creepiest pick-up line was
"If I knew you were so beautiful, I would have started complaining about my meals sooner".
Tame like, but it was out of the mouth of a serial rapist who'd beat his last victim almost to death.
===shudder===
I just smiled lamely and told him we weren't the Ritz.
Once in college, I was in a crowded darts bar...the kind that feature twenty-seven varieties of imported beer on tap. I found myself shoulder-to-shoulder with a pretty redhead. I asked her what she was drinking; she told me, and asked me what I was drinking; I told her. Then I asked if she wanted to swap sips, which we did.
As I handed her mug back to her, I said "It tastes like you."
She smiled and said "You don't know what I taste like!"
In reply I said "Well, it's early yet."