A little boy was doing his maths homework & saying: 2+5, the son of a bitch is 7. 3+6, the son of a bitch is 9.

His Mom: What are you doing?

Boy: I’m doing maths homework.

Mom: this is how your teacher taught you?

Boy: Yes.

Infuriated, Mom asked the teacher the next day- ‘What are you teaching my son in maths?’

Teacher: Right now, we are learning addition.

Mom: You teaching them to say 2+ 2, the Son of a bitch is 4?

Teacher after laughing: What I taught them was, 2+2, the sum of which is 4.