Everybody and his brother

Everybody and his mother-in-law / Everyone and their mother / Everyone and his aunt / All the world and his wife / All the world and his dog


Mezzo mondo

Metà di mille / Popolo e comune / Cani e porci

Meanings
Everyone without exception
Examples
Everyone and their aunt is scrambling to get their hands on those lucky shares
Mezzo mondo sta lottando per mettere le mani sulle quelle fortunatissime azioni
They planned to have a very private wedding but all the world and his wife showed up and they ran out of champagne in no time
Doveva essere un matrimonio per pochi intimi ma si sono ritrovati in metà di mille e lo champagne è finito in men che non si dica
She's still hoping to keep it quiet, but everybody and his brother is talking about it
Lei spera ancora di poterlo tener segreto e invece lo sa popolo e comune
Once upon a time a color TV was a luxury, but nowadays everybody and his mother in law can afford one
Una volta avere un televisore a colori era un lusso, mentre oggigiorno anche cani e porci se lo possono permettere