Perhaps "ralph" is not a slang term for "vomit" in the UK, as it is in the US. At any rate, it's all I can think of when I hear the name
Ralph, that and an overweight bus driver who engages in bombastic self-promotion to hide his low self-esteem. Kind of a shame, I know, since
Ralph is an ancient, established name, 18th-century spelling change notwithstanding.