Dear Upper Management Bigwig:
Thanks so very much for your baby gift for TwoBert. My wife and I were very touched that you thought of us. We were also pleasantly surprised, since you and I are separated by three tiers of the corporate food chain and thus don't interact all that often.
It was a lovely sentiment, and I'm sure we would have thought of you every time we used it. Since we already have four of them, however, we're gonna re-gift that sumbitch at our earliest convenience.
P.S.: Come to think of it, I'm glad this wasn't said.