小三就是收废品的
[xiăo sān jiù shì shōu fèi pĭn de]
'Xiao San Jiu Shi Shou Fei Pin De', Xiao San stands for the 'third party' interfering in a couple's relations; the sentence as a whole roughly translates to 'The mistress should just collect junk'. It suggests lowly opinion of someone who became involved in other people’s relationship.