Mrs. Cooper and Sheldon in “The Luminous Fish Effect”

[in trying to get Sheldon to go apologize to his boss Dr. Gablehauzer] Now listen here, Sheldon, I've been telling you since you were five years old, it's okay to be smarter than everyone else, but you can't go around pointing it out!

Why?

[sternly] Because other people don't like it!! Remember all the ass-kickings you used to get from the neighbor kids? Are you ready? Get your shoes, shirt and let's shove off!

[in a defeated tone of voice] There wouldn't have been any ass-kickings if that stupid death-ray would've worked.