I thought you could figure that out yourself, rat brain.

"You took the wrong remote off me, rat brain."

"Get those into your rat brain and you won't be sending machines over cliffs," said Terl.

I didn't think I was getting through to your rat brain.

"Animal, you must have realized by now- in spite of your rat brain- that your best course is to cooperate with me."

"You fly this thing pretty good, rat brain, when you're not trying to kill everybody."

Trouble is, rat brain, you didn't watch what I was doing.

My minuscule rat brain had lost track of that fact while I was being chased!

One summer, the study of mud turtles was a big hit; another time, it was rat brains.

Piracetam appears to reduce levels of lipofuscin in the rat brain.