<human>: Can you summarize the given text in a few sentences?

In my school, it's the teachers that move around the classes and teaches in the students' room. 

For 8th grade there are four different sections; A, B, C, and D.

Three of my section 'B' students come and ask me;

"do we have you now?" 

To which I *wanted* to say "no, I have 8D now" 

What actually came out was my brain going into stupid mode and combining "I have your class the third" with " no, I have 8D now" 

It came out as "I have the D" 

The look on their faces... Oh the horror! 

True, I acted cool like I don't know why they gave me that look. It might be possible to pass for a "you heard wrong" but just one phone call and my passion of teaching is down for good.
<bot>: student asks me if I have their section, and my answer was an accidental sexual innuendo that could end my career for good.