Lending money to friends ..a parable..or a joke not sure

Lending money to friends

a parable or maybe a joke.

Two best friends were talking.

can you lend me five hundred dollars

I have so many bills this month one said.

yes but I must get it back next month

the other replied.

for sure next month he said no problem.

a month later

do you have my money

not this month next month he said

ok no more excuses.

another month  later

well do you have my money.

no but you can have my dog.

he shows an old sick

bald  toothless dog

that did its business everywhere.

and says OK one last month

that's all I want my money.

Another month goes by.

well do you have my money

he said angrily.

no but you can take my wife.

he looked carefully

at the offered lady.

then replied

can I take another look

at that dog..