怪咖蜀黍
[guài kā shŭ shŭ]
Combining words like 'eccentric' (怪咖: quirky, unconventional) and 'uncle' (蜀黍: an affectionate term for uncle), it paints a picture of a peculiar but friendly middle-aged man who enjoys doing unusual things, being out of the ordinary, while still giving off a positive, easy-going vibe.