Are You Pondering What I'm Pondering?

I cannot believe I used to laugh at some of these:

"Pinky, are you pondering what I'm pondering?"
Well, I think so, Brain, but first you'd have to take that whole bridge apart, wouldn't you?

"Are you pondering what I'm pondering?"
I think so, Brain, but we're already naked.

"Pinky, are you pondering what I'm pondering?"
I think so, Brain, but culottes have a tendency to ride up so.

"Pinky, are you pondering what I'm pondering?"
I think so, Brain, but if they called them "Sad Meals", kids wouldn't buy them!

"Pinky, are you pondering what I'm pondering?"
I think so, Brain, but me and Pippi Longstocking -- I mean, what would the children look like?

"Are you pondering what I'm pondering?"
I think so, Brain, but I don't think Kay Ballard's in the union.

"Pinky, are you pondering what I'm pondering?"
I think so, Brain, but, the Rockettes? I mean, it's mostly girls, isn't it?

"Pinky, are you pondering what I'm pondering?"
Umm, I think so, Brain, but three men in a tub? Ooh, that's unsanitary!