Do teachers have diarrhea?

Have you ever seen a teacher just randomly go to the toilet in the middle of the class?

It happen to every one of us: you forgot to poop in the morning and all of a sudden you feel the wrath of god unleashed upon your belly while the teacher goes "bla bla bla" in front of the classroom; your mind goes blank as you attempt to suppress the excruciating pain by trying to rip appart your desk with just the tip of your fingers and in a moment of clarity,peace and joy, when the tide settles for a split second, you realize there are still 30 minutes to go. After another 30 seconds you shamefully raise your hand and ask the embarrassing question knowing everybody knows why.

So my question is this: did you ever see a teacher just suddenly burst out of the classroom because he/she just couldn't hold it in anymore?

Cause in my 12 years of school i did not.