Damn that was cringey. Canned responses and awkward body language/conversation. You can see how awkward the girls feel when interacting with this dude, I would bet that none of the numbers he got replied. They probably just gave their number (or a fake one) to escape from the situation.
If you get the girl laughing you're doing it right.
There's different types of laughter. This was mostly awkward laughter. You see, laughing is a way to release tension and those awkward approaches sure built tension, but not much comfort.
Imagine a girl you're not attracted to at all, comes up to you on the street and pull a conversation like that. You awkwardly laugh along to be polite hoping they go away soon. This is what these girls are doing, because out in public in broad daylight they don't want to come off as rude.
This is certainly not a way to (successfully) pick up girls using insults.