Just watching the new episode of Designated Survivor with Kiefer Sutherland when the following storyline came up:

A news reporter has a story that the Presidents eldest child may be another man's. Kiefer explains... 'yeah when I met my wife she fell pregnant instantly so it could be mine or the Chad before me' adding, for perfect white Knight measure 'I never did a DNA test as I loved her and didn't care if it was mine or not'

I guess I should have said 'spoiler alert' but the only thing this storyline is spoiling is my enjoyment of the show.