男女兽兽不亲
[nán nǚ shòu shòu bù qīn]
The name '男女兽兽不亲' suggests a separation or incompatibility between genders. Here, '兽兽' (literally means beasts) is an endearing repetition that emphasizes the lack of connection like 'beasts'. It's used humorously and often indicates two individuals of opposite sexes are too different to interact closely.