Simple answer .....don't tick "yes".
A bad idea, even for Gerge. If you don't declare something, and it turns up in a search, the consequences are terrible indeed...fines, jail, forcible sodomy, etc. And they've gotten very, very good at searching bags...
When I returned to the USA the last time, I'd brought a bag of meat horrors with which to freak out the locals...duck tongues, chicken feet, bull penis "beef" sticks, and so on. I noticed the Customs form asked about meat products, so I checked 'yes'.
When my turn in the line came, the agent asked if I knew I had checked 'yes', and whether I intended to do so. When I confirmed, the guy seemed absolutely stunned. He turned to other agents and said, "Hey, this guy said yes on something!" The other agents looked shocked in their turn. It was kind of like no one had ever said 'yes' before and they weren't sure how to deal with it.
They pulled my freaky meat out of my suitcase, waved the rest through, and thanked me for my honesty and patriotism. That was it!
As with other official dealings, honesty is usually the best policy.