A barbecue is an incinerator.
The possessive form is the mouse's barbecue.
You must find a simple metaphor to use.
Yes, no cats allowed.
You would say, 'the mouse's barbecue'.
An extended metaphor is a metaphor that is started early in the work, usually at the beginning, but it can be added later, that evolves and stretches itself throughout the passage. For example if you were to write a paper, and use a road as a metaphor for the path of life, and you were to develop and use this metaphor throughout the paper then it would be an extended metaphor.
Metaphor
you would have more fun at a dignified backyard barbecue
no..drama queen is not a metaphor
The Pinciotti family invited Eric over for barbecue, but he thought it would be awkward.
His voice thundered through the house.
No. One word does not make a metaphor. "Bob is groaning" would be the closest you could get, but that is a statement, not a metaphor.
A metaphor for Christmas would be: "Christmas was a beautiful as spring day!"