"I love you and want to have your baby." - Knew each other for .5 seconds
or
"I will pay you 20,000RMB for your sperm." - Proposal I received from a woman at a invitro clinic when my wife & I went there to conceive.  She really wanted a mixed baby. My wife said, if she offers 50,000 then sell.

"nice shoes want to discuss Russian Literature."
It didn't work. I did get several laughs however.

One I've used,,in a bar,, in a low sexy voice, say '' Hi there ,, can I buy you a,,,,,,,,car ? " ,, I get a laugh, breaks the ice. 

my pick up line for women is can u be my baby tonite? if you say yes i promise i won't make u cry! 
a boy come up to me and say 'i saw u in the hallway a little sexy asian guy, i knew the first time i saw u i want be wit u' i tell him i'm not gay! he tell me i don't care! he tell me give him a kiss' i tell him again' i'm not gay' i leave end of story
a girl came up to me in a bar and she said i thought u were cute want to see my boob? i said ok' then she said she want to see my boob' i said i don't have a boob' can i still see urs' she tell me gross' but she still think it funny because i tell her a joke afterwards and she ok. 

Overheard in a bar in Philly that is down the street from the seminary..."you know, I am not a priest yet..."

Do you work at Subway?? Cuz you just gave me a footlong...... Does that count??

In China:

"I miss you." - from a girl I just met

My favorites:

"I want you in the worst way possible..... standing up in a hammock."

"So... Do you live around here often?"

And the guarantee:

"My two favorite things are commitment and changing myself."