muggins
/ˈmʌgɪnz/noun
(复同单, 或mugginses)
1- Brit.informal a foolish and gullible person〈英, 非正式〉易受骗的人; 傻瓜。
1.1
- humorous used to refer to oneself in order to suggest that one has been stupid, especially in allowing oneself to be exploited〈幽默〉［自称］本傻瓜, 鄙人, 呆子我：
muggins has volunteered to do the catering.
我这傻瓜自愿要做备办饮食的事儿。
词源
mid 19th cent.: perhaps a use of the surname Muggins, with allusion to MUG1.