So, I was talking on chat about this article
about a letter to the editor of the Marvel Star Wars comic all, "not enough Luke/Leia" romance. Anyways, that made me think of the "So that's how it is in their family" line from Ferris Bueller, which led me to this
scene from the TV show:
Click to view
I mean, until the big reveal, wouldn't people start freaking out and being all, "What the eff? Ferris is making out with his sister!"