Failed in Maths

Failed in Maths

Father (Angrily):
Why did you failed in Mathematics?
Pappu:
This is not my fault.
First day our teacher told me "3 + 5 = 8"
The next day she told me "2 + 6 = 8"
And the day after she told me "4 + 4 = 8"

So now you can understand.
When our teacher herself is confused about maths then how can you expect from her to give me good marks..