muggins

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++mug·gins /ˈmʌɡɪnz/ noun [uncountable] British English spoken informal  STUPID/NOT INTELLIGENTused humorously to mean yourself, when you feel stupid because you have let other people treat you unfairly 我这个傻瓜，笨蛋〔幽默用法，用于自嘲〕 Everyone disappeared after supper, leaving muggins here to do the washing-up. 晚饭后大家都走光了，留下我这个傻子在这儿洗碗碟。Origin muggins (1800-1900) Probably from the name Muggins, linked with → MUG1 4

mug·gins nounChineseSyllable  

muggins
mug‧gins /ˈmʌɡɪnz/ noun [uncountable] British English spoken informalused humorously to mean yourself, when you feel stupid because you have let other people treat you unfairly:
    Everyone disappeared after supper, leaving muggins here to do the washing-up.

mug·ginsBrE /ˈmʌɡɪnz/ 🔊NAmE /ˈmʌɡɪnz/ 🔊 noun [singular] (BrE, informal, humorous) used without 'a' or 'the' to refer to yourself when you feel stupid because you have let yourself be treated unfairly （不用 a 或 the，表示因受到不公正待遇而觉得自己很蠢）傻瓜，笨蛋◆And muggins here had to clean up all the mess. 而我这个傻瓜现在不得不清理这个烂摊子。🔊🔊