It's rude to repeatedly borrow money from others.
Bill is behind in his rent, for the seventh time this year, and has already asked his friends for help a lot.
Bill needs to pay his rent.
Bill asks the landlord to give him a few days of clemency.
Bill asks his best friend for another loan to help pay his rent.
The landlord obliges, since he respects Bill for asking directly.
Bill's friend gives him the money, but gets annoyed and scolds him for asking so much.