"Uffda" is one of the funny things they say, but my personal favorite is the expression, "Oh, for dumb!" which I've also heard as "Oh, for fun!" and "Oh, for sure!" Maybe some of you can remind me others ways this expression is used.

PS: Just in case you were wondering, I don't recommend trying to drive (with your knees) and take a picture at the same time. It's really not safe.