吃白食的人
freeloaders
n. 不速之客，揩油的人( freeloader的名詞復數 );
[例句]Though gas meters were considered more difficult to tamper with, this had not deterred some ambitious freeloaders.
雖然人們認為煤氣表更難搗鬼，這並沒嚇住那些野心勃勃的想占便宜的人。