Prenatal Vitamins and the Art of Faking Conversation.

I've been trying to take Hair, Skin, Nails vitamins for a while now. They're glamour vitamins, similar to One-a-Days but with extra amounts of certain vitamins that make you look better. Some cheap HSNs contain only the "beautifying" vitamins, but I have been picking ones with the full range so my health doesn't suffer for my vanity.
Daily V's have always given me tummy aches, so it came as no surprise when the beefed up ones gave me wicked stomach cramps. Not the Boston version of 'wicked,' but the original, real meaning. These cramps were evil. Since the dosage was two pills, I split them up with my meals: one at breakfast, the other at lunch. I still would feel uncomfortable, though.
So, at a recent check-up, I happened to mention my issue and my doctor recommended Prenatals, but in a chewable, gummy version. She said that they are easier to digest (it is) while containing basically the same nutritional boost (it's pretty close).

On the way to Target a few days later, I started to tell my fiancé about what my doctor said. We had a convo that started with my story but then morphed into him also getting chewable vitamins in case the gumminess made taking a one-a-day more tempting/easier for him to take, too.
We spent half and hour to gather $80 worth of crap, of which ten minutes of that time as spent in a vitamin isle. I noticed Tim was acting strangely during this time but thought nothing of it because of how much he dislikes going to Target. I just figured he was cranky.
We bought our items, grabbed our two bags & paper towels, and headed to the car. When we were out of earshot from toddlers and their pearl clutching mothers, Tim nudged me with the edge of his bag and, in a deliberately calm voice, asked, "What the hell?"
Assuming I'd missed something epically Orange Trashy County or classically Long Ghetto Beach, I began looking around me curiously. "What happened?!" I replied. 

"Are you pregnant?" He asked with an edge to his voice.

I stared at him, confused and 'getting it' at the same time - which is a very strange feeling. 

"You're talking about the pre-natals?"

"Yeah."

"Remember when we were in the car talking about what we were planning on buying and we started talking about vitamins?"

He nodded.

"Did you tune me out for a little bit before that?"

His intensely serious facial expression softened as he remembered and his eyes had the faraway look of connecting dots. 

"Tim, honey," I said. "You are really good at tuning me out while convincingly faking a conversation."

As we climbed into the car, I told the whole story again, laughing at his sheepish responses. I clowned him for not hearing me, teasing him about learning a lesson. But I wonder if it was a lesson learned or a hole in the development of a practiced talent.