Agreed. Why can't they come up with something more imaginative like :
"Because you are so tall, it's probable that you'll die young of a heart-related illness. This will help address the current imbalance in the national average male/female mortality rate, and thus ensure that my monthly donation to "Age Concern" gets portioned out equally amongst the sexes, rather than just getting fucking squandered on bottles of blue-rinse". I'm all for spontaneity.
The only chat-up line i've ever used, ever; "I'm not Fred Flinstone, but i'm sure i could make your Bedrock"
Unfortunately this is redundant nowadays, as nobody has heard of Bedrock.