After a recent trip that included some places where "sewer" means "street", insect bites can be nearly fatal and "hospital" is an empty building that might have had electricity at one point but now has nothing, I returned home and the Customs Agent asked me "if I had anything to declare"
I was tired and dirty and and said "I declare I'm extremely happy to be back home where the water won't kill me, the toilets flush and the hospitals have actual doctors."
He waved me on, but I couldn't tell if he was amused or annoyed or neither and I'm not sure if it was a really bad idea to make a joke to the agent.
Could I end up having problems if I make jokes to US Customs agents?
Does it matter if the joke is pro-US or something different?