Okay, thanks, sewer. I'm just not up on my "blonde" jokes, so I don't know the train one either.

Was the first one something like:

A blond went to see a shrink. In the course of the conversation, she notices that the blond is obviously pregnant.

"Are you pregnant?" the shrink asks.

"I don't know," the blond says. "Do you think it's mine?"

I find that funny, anyway.....