小兩口

(coll.) young married couple

small / tiny / few / young

mouth / classifier for things with mouths (people, domestic animals, cannons, wells etc) / classifier for bites or mouthfuls

two / both / some / a few / tael, unit of weight equal to 50 grams (modern) or 1⁄16 of a catty 斤[jin1] (old)

erhua variant of 小兩口|小两口[xiao3 liang3 kou3]