I think what people say here about timing and emphasis is good. A lot of times it is what is said, or what isn't. I always try to look for unusual relationships, or try create some kind of absurd habit in my life:
1. Always eating chocolate
2. Acting like I love rainy days more than sunny ones
3. Pretending like it is fun to talk about the days of the week
I think it is taking the ordinary and then being sarcastic or absurd about it.
And I don't usually drop links, but here is a Chris Rock youtube link:
YouTube - Chris Rock- View on Love and Relationships