not much upstairs

not much upstairs

Not very much in the way of intelligence. She seems nice enough, but I get the sense that there's not much upstairs. Jake's boyfriend is incredibly attractive, but he doesn't have much upstairs from what I can tell.
See also: much, not, upstairs
References in periodicals archive ?
It's largely hard right Brexit bungalows (not much upstairs) who do it, although there have been instances of pro-EU activists having a go too.
He added: "It was often stated that girls who go for the Miss World competition are a bit thick with not much upstairs."