Go cap in hand - Idioms by The Free Dictionary
go cap in hand
go cap in hand (to someone)
To ask someone for help, often monetary, with embarrassment. Primarily heard in UK. I don't have enough money for rent this month, so I guess I'll just have to go cap in hand to my parents.
go cap in ˈhand (to somebody) (British English) (American English go hat in ˈhand) beg for something very respectfully: I’ve run out of money, but I don’t want to go cap in hand to my father.