who knows what

who knows what

One or more things described with no detail. Our junk drawer has old remotes, instruction manuals, and who knows what else in it. You're supposed to be doing your homework, but instead you're slacking off and doing who knows what!
See also: know, who

who knows what

see under what have you.
See also: know, who
References in periodicals archive ?
In 1 Corinthians we read, "Among human beings, who knows what pertains to a person except the spirit of the person that is within?