Septum

I was teaching Science today, in the General Science Lab.

The students were doing some exercises I had given them when one student raised her hand and asked:

"Teacher, what is a septum?"

Uh....uh....

Think. Think. Think.

Oh, shit.

Shit, shit, shit.

It's...uh...something to do with the blood circulation thingy...

Damn, I just can't remember!!!

"Err... Please hold on while I find out for you, okay?"

*Student nods skeptically*

And I frantically searched my whole reference book, in vain.

Last resort...

I fished out my cell phone (my beloved savior!!!) and crouched under the table before phoning Mr. Han (the bestest Biology teacher in the world), who was having his lesson in the Biology Lab, just about three classrooms away from the General Science Lab. I know I could have walked. If you were in my position, you'd know why I didn't.

Beep, beep. Beep, beep.

Mr Han: Hello?
Me: Sir!!! I need your help!!!
Mr Han: *surprised (who wouldn't be?)* Huh? Rachel?
Me: What is septum????
Mr Han: Oh... The wall that separates the left and right ventricle lah. Duh. (No, he didn't really say that, but I could sense it in his voice).
Me: Oh yeah!!!!!

Now I remember...

Me: Thanks! Bye!!!!

"Uh, whoever that asked me what septum is, it's the wall which separates the left and right ventricle."