I was once asked to speak at a friend’s Sheva Brachos on about 3 minutes notice. I had no divrei Torah to say, and had nothing prepared. So I got up and said the following (with made up names for the couple):
“I’m sure by now we all know that Avi and Sarah are absolutely perfect. Every speaker has praised them and told us how they’ve never done anything wrong. Well, guess what: it’s not true! As much as we like to pretend during this week, let’s face facts: they’re not perfect! In fact, I can tell you stories about Avi… (pause for a moment)… but I don’t think I will. I don’t know Sarah well enough yet, but I’m sure she’s not perfect either (nothing personal, Sarah – nobody is perfect!)
So what do we do with our imperfect couple? Am I wrong for pointing this out? No! Their imperfections are a fantastic thing! After all, your spouse is supposed to complete you. Where one isn’t perfect, and is lacking, the other one fills in. That’s how they complete each other. They complement each other, and support each other when one is lacking. This is the basis of marriage, and only like this can a bayis ne’eman be built.
My bracha is that they should be able to help each other, to lean on each other, and to complete each other, and in this way, build a bayis ne’eman b’Yisrael.”
So I started off seeming like I was teasing them, then turned it around.