Whoa, what's going on here?!? The gang looks down at Sheldon's odd hairstyle in this scene from The Big Bang Theory.

The Big Bang Theory Season 5 Episode 18 Quotes

Penny: I use to cut my brother's hair. I could do it for you
Sheldon: I know you mean well, offering the skills of the hill folk, but here in town we don't churn our own butter, we don't make dresses from gunny sacks, and sure-as-shootin don't get our hair cut by bottle blon..
Leonard: Sheldon be nice!

To paraphrase T.S. Elliot, this is how the world ends, not with a bang but with a nephew.