My younger cousin saved for two years, and finally had eighty thousand yuan in his account.

He made a plan: to gather a hundred thousand yuan by the end of the year to redo the roof of his family’s house.
But last week, his childhood friend bought a used BMW, spending sixty-eight thousand yuan.
My cousin asked: Where did you get so much money?
His friend replied: Charged it to my credit card, paid in 24 installments.
Cousin: So what are you going to do to pay it back each month?
His friend, with his arm around him, smiled: Don’t you have savings? Just lend me some for a couple of months to get by, I’ll pay you back once I have more cash.
My cousin was stunned on the spot.
Even more unbelievable, his friend quickly added:
“Don’t worry, I bought a car, right? From now on, when I take you out to play, the gas is on me.”
My cousin still hasn’t figured out how to refuse.
I asked him if he ended up borrowing money.
He said no, but he treated his friend to a barbecue, costing four hundred yuan.
Because his friend drove him there.
What do you call this kind of thing?