Which of the following idioms fits this description ?
A person who selfishly prevents others from using, enjoying or profiting from something even though he/she cannot use or enjoy it himself.

Question

Which of the following idioms fits this description ? 
A person who selfishly prevents others from using, enjoying or profiting from something even though he/she cannot use or enjoy it himself.

Accepted Answer

Option 2, "A Dog in the Manger," is the correct idiom that fits the description provided in the question. This idiom originates from a fable attributed to Aesop, where a dog lies in a manger full of hay. The dog cannot eat the hay itself, but it selfishly prevents the oxen from eating it. This story illustrates the behavior of someone who neither uses nor lets others use something, aligning perfectly with the description of a person who selfishly prevents others from using, enjoying, or profiting from something even though he/she cannot use or enjoy it himself.

Now, let's explain why the other options are incorrect:

1. **A Guinea Pig**: This term is commonly used to describe someone who is used as a subject in an experiment or trial. It does not relate to the behavior of preventing others from using or enjoying something. Therefore, it does not fit the description provided in the question.

3. **A Home Bird**: This idiom refers to someone who prefers staying at home rather than going out or traveling. It describes a preference for domestic life and has no connection to the act of preventing others from using or enjoying something.

4. **A Lame Duck**: This term is often used in a political context to describe an elected official or group that is still in office after having lost a re-election bid or is nearing the end of their term, with diminished power or influence. It does not relate to the selfish prevention of others from using or enjoying something.

In conclusion, "A Dog in the Manger" is the only idiom among the options that accurately captures the essence of the behavior described in the question, making Option 2 the correct answer.