邊有咁大隻蛤乸隨街跳〔边---只--随--〕 bin¹ jau⁵ gam³ daai⁶ zek³ gap³ naa² ceoi⁴ gaai¹ tiu³ {biān yǒu gān dà zhī gé ná suí jiē tiào}

(literally: where would there be such a big toad hopping around the street?); a rhetorical question suggesting that a deal is too good to be true