captioned 3 (BBC version) - read the punchline - and cum

captioned 3 (BBC version) - read the punchline - and cum by ruactive2

- Why do you show me that, Professor - I already know you have a cock...?
- Well, You wold like to have an "A" - wouldn't you ?
- When you put it to me like that...I would actually much rather have a "D", Sir...!