Dr. Cox: Bob, we have a problem.
Dr. Kelso: Not now, Perry, I'm swamped. I'm trying to find an exterminator to kill the bat in my attic.
Dr. Cox: Be a man, Bob. That's what tennis rackets are for!
[flashback to Dr. Kelso in the attic with his dog:]
Dr. Kelso: Oh, good lord! He got Baxter!
[present:]
Dr. Kelso: Try telling that to my one-eared dog.