What's the euphemism for suckers?

Since Daiyu was caught on fire, its meaning has become wider and wider, and its uses have become more and more. It is usually similar to the meaning of "big head", such as my friend Daiyu and his girlfriend, which means that my friend and girlfriend are big heads and always do something thankless.

It should be noted, however, that "suckers" are not swearing words, but a neutral word, which is generally used to describe people who have done things they shouldn't have done, assumed responsibilities they shouldn't have taken, and didn't get corresponding rewards after paying, for example, this person brushed tens of thousands of dollars for an anchor, but got nothing. Chunchun is a big injustice. There are also big grievances in the workplace.