KROP'S PROFILE

I apologize if this is in the wrong board. It's my first post here so it's likely I messed up with something.

I keep seeing games from this forum with witty banter as good as Portal. And to be rather blatant, my dialogue sucks. How do you guys come up with your stuff? Is it a spur of the moment "oh hey this sounds cool", or do you actually put anything behind it?