The best pickup line EVER!
You see, what's genius about it is that in the use of the word "we" it definetely makes you sound like a couple - "hang out" makes it sound a whole lot more casual - and "sometime" makes it open and not too rushed. Also worth note is the fact that it's not a yes or no question, it's an opinion - and you can't say no to an opinion!
The pickup line was invented - or at least popularized - by Josh Sundquist
, who is an awesome YouTuber. OF AWESOME.