“Mr. Audu, the Fine Arts teacher, who was a bunch of biting humour…” What does this description of Mr Audu mean?

The phrase "a bunch of biting humour" contains two key words that define Mr Audu's character. "Biting" means sharp, cutting, and capable of causing discomfort, while "humour" refers to wit or comedy. Together, "biting humour" describes a style of comedy that is pointed, critical, and sometimes stinging in its delivery.

This description means Mr Audu is sarcastic and has sharp, critical wit. His jokes and remarks are not gentle or merely entertaining. They have an edge to them: they expose, criticize, or mock in a way that can feel sharp. Sarcasm is a form of verbal irony where the speaker says something cutting, often with the intention of mocking or criticizing, and that is exactly what "biting humour" conveys.

The other options do not fit this description:

• "Friendly remarks" contradicts the word "biting", which implies sharpness, not warmth.
• "Apt innuendos" refers to indirect hints or suggestions, which is different from openly sharp humour.
• "Unintelligible remarks" means remarks that cannot be understood, which is not implied by "biting humour" at all.