語句
歇後語，下半句係「多嚿魚」，粗口「多鳩餘」嘅諧音 the first part of a "sandwich pun", which literally means "French feast", the second part of it is 多嚿魚 do1 gau6 jyu2 (one fish too many), which is a near homophone of 多鳩餘 do1 gau1 jyu4 "un-fucking-necessary"