Spanish fly

noun

1. 西班牙芫菁
   a bright green insect that has a strong smell and produces a harmful substance
2. 西班牙芫菁混合剂（有毒性，据信可催情）
   a poisonous mixture made from the crushed bodies of these insects, that is said to give people a strong desire to have sex

1. And if you wanted to tell someone off in Spanish our relatively obvious "go fly a kite" would be better served by the phrase "go fry asparagus".
   如果你想用西班牙语指责某人“放空头支票”，那么最好是用“gofryasparagus”，而不是相对较直白地说“goflyakite”。