lazy teacher

A lazy teacher was once employed ina school and he went to the class toteach. The first day. Teacher: good morning students Students: good morning sir Teacher: I'm going to be your new biology teacher, so do u know what we have this morning? Students: No sir, Teacher: Since u don't know it, there's no point of teaching u. The teacher went and came the following day with this conversation. Teacher: gud morning students Student:gud morning sir Teacher: Do u know what we are having this morning? Out of fear of the previous day, they said "yes sir". Teacher: Since u already know, there's no point teaching u again. The third day the teacher came backto class and asked again. Teacher: Do u know what we are having this morning? Out of confusion some said Yes, while some said No. Teacher: alright then, let those that know teach others who don't kno