razz someone's berries

A dated American idiom meaning to impress or excite someone. 'Razz' here is used in an older positive sense of stimulating or thrilling, while 'berries' is early 20th century slang for something excellent (cf. 'the bee's knees', 'the cat's pajamas'). The phrase has a Prohibition-era jazz-age flavor and is virtually never used unironically in contemporary speech, but it captures a very specific mid-century enthusiasm.

A delightfully old-fashioned American idiom meaning to impress or excite someone — to really knock their socks off. It comes from early 20th century slang when 'berries' meant something excellent (as in 'the bee's knees' era of colorful expressions). If you razzed someone's berries, you genuinely wowed them. The phrase has faded from everyday speech but survives as a charming relic of Jazz Age enthusiasm.

(US, slang, idiom) To impress somebody.