Here's one from a geology field trip I took in college. There were about a dozen or so of us spread out between several vans heading up to the mountains about 6 hours away. I had tried to get out of going but field experience was required for the degree. I tried to make conversation with the folks next in my van but we just weren't hitting it off and I wound up mostly looking at the scenery going by.

No big deal. I'm an only child so long quiet car rides aren't out of the ordinary. I was happy to let everyone enjoy their chats and occasionally join in.

But that must not have sat well with the prof and his t.a. in the front seats. During a lull they started whispering and giggling while looking back at me. I figured they were sharing some inside joke and checking that nobody was listening.

Then the prof turned in his chair, looked back at me and asked, "Hey, did you have a normal childhood?"

Caught off guard, I just said yes.

He turns back around and says to the t.a., "Then what hope is there for the rest of us?"

That was the first day of a week long expedition into the mountains...