Whenever I am on my bike on the lovely trail that we have between my house and Toby's school, people stop and talk to me. Usually they ask me directions, often they ask me where I was able to find that trailer (I tell you, I am a spectacle!). Sometimes though, they ride up next to me and want to have a conversation.
My Polish is very limited. I can tell you how to get to the park ("Straight. Hotel name "Ant" turn right. Straight still, up hill."). I can tell you where I bought the trailer (in VERY limited Polish, consisting only of "In Germany.")
When those people pull up next to me and start conversing with me, I usually just smile and nod. If you are ever in a foreign country (or in your own for that matter) and speaking with someone who smiles and nods, they don't know what you're talking about. You can just stop talking to them.
This was much funnier in my head:).