A mother and a father with two sons. It stands for a family of four with two boys, whether brothers or twins.
Parents of boys use it in bios and birthday posts, and it fits jokes about a house full of boys, noise, sports, and laundry. With โฝ or ๐ฎ it hints at the chaos of brothers at home.
Facts
Family: man, woman, boy, boy ๐จโ๐ฉโ๐ฆโ๐ฆ is an emoji in the people and body category, under family. It became part of the emoji standard in Emoji 2.0, released in 2015. It is a sequence that joins ๐จ man, ๐ฉ woman, ๐ฆ boy, and ๐ฆ boy. Devices that do not know the sequence show those emoji side by side. On GitHub, Slack and other apps you can type it as :family_man_woman_boy_boy:. People also look for it with words like โboyโ, โchildโ, โfamilyโ, or โmanโ.