I went on a deployment to Bahrain and Kuwait in 2008. I liked to pack civilian shirts from local stateside business' when I go overseas because someone somewhere will see it and say they've been there or something. Good convo starter.
On this trip I took my "Van's Pig Stand" shirt with a big pig and fork on it. It was completely lost on me until a comrade pointed out that we were in a Muslim country (pork = bad) and I'm wearing this pig shirt everywhere out in town! LOL Lucky I didn't get martyred.