expression
a freeloader hesitantly asks for a third helping of rice
Proverb describing how a long-term guest or dependent, after initially being reserved, eventually becomes bold enough to ask for more, often used to illustrate the gradual loss of modesty when one gets too comfortable.
「居候三杯目にはそっと出し」というから、最初は遠慮していても、慣れると図々しくなるものだ。
As the proverb goes, 'a freeloader hesitantly asks for a third helping of rice' — even if you're reserved at first, you get bold once you get used to it.
A traditional Japanese proverb. The exact origin is uncertain, but it reflects the social dynamics of long-term guests in pre-modern Japan.