He will hire anyone who can fog a mirror.
fog a mirror
idiomTo be alive.
Origin
disputed originFrom the notion of placing a mirror near the nose or mouth of a sleeping person to determine whether they were still breathing, thus alive; indicated by the glass fogging up.
The company is so desperate for workers that they will hire anyone who can fog a mirror.
In this competitive market, the recruiter joked that the only requirement for the entry-level position was the ability to fog a mirror.