Making another attempt

Here is a limerick:

There was an old man in a trunk,
Who enquired of his wife, “Am I drunk?”
She replied with regret,
“I’m afraid so, my pet”,
And he answered,”that’s just as I thunk.”

Where exactly was the man? I doubt he could have been in a car boot or in a suitcase. Or should we take TRUNK as meaningless and used merely for the purpose of rhyme?
Please give your considerations.

I'm not really sure what they mean by "trunk" either. All I can say is, from an artistic perspective, I think they should have used "asked" instead of "enquired", because the second line has one too many syllables. ;-)

Could it be a tree trunk or an elephant's nose?

A man in an elephant's nose? Euuww... lol

I think a car is more plausible.

"Or should we take TRUNK as meaningless and used merely for the purpose of rhyme?"

Clearly so.

"Or should we take TRUNK as meaningless and used merely for the purpose of rhyme?"

No, not so much meaningless as unimportant. It could mean "car boot" or "suitcase." However, neither of these meanings is significant other than setting up the TRUNK-DRUNK-THUNK rhyme.

Tnx to everybody!