2009至2010年，以「蝗蟲」形容部分中國大陸人嘅行為喺香港互聯網流行，以香港高登討論區為主。2012年初，由於D&G禁止香港人攝影風波及孔慶東辱罵港人事件，加劇香港同中國之間嘅積壓已久嘅矛盾。有網民集體籌款登報反對雙非孕婦喺香港分娩。廣告係一張大街招，上邊係一隻草蜢騎住獅子山，寓意蝗蟲侵蝕香港，蝗蟲論因此獲得香港市民以及全世界媒體關注。
From 2009 to 2010, the use of "locusts" to describe the behavior of some Chinese mainland people became popular on the Internet in Hong Kong, mainly in the Hong Kong Golden discussion forum. In early 2012, the D&G ban on Hong Kong photography and Hung Hing-tung's insults to Hong Kong people exacerbated the long-standing tensions between Hong Kong and China. Some netizens collectively raised funds and published a newspaper to oppose the delivery of a double non-pregnant woman in Hong Kong. The advertisement is a street post, with a grasshopper riding a lion rock, implying that locusts are encroaching on Hong Kong, and the locust theory has attracted the attention of Hong Kong citizens and the world's media.