A school bus or an asshole boss

I just had the following conversation with a student after class.


Student: Thursday, I come 3?

(our class goes from 2-4 and she must attend as a condition of employement at a hotel)

Me: Why?
Student: Uh, uh, uh Mi baby. Mi baby,uh, aschol boss.
Me: I'm sorry, excuse me?
Student: Asshole Boss. escuela, escuala.
Me: Ah! School.
Student (flustered): Si, siSchool Boss. Bus. Bus. School Bus.
Me: Ok. See you at three.
Student: Thank you, teasher.

I don't know why, perhaps it's a bit sadistic, but I always derive such amusement from situations such as these.