Well...in digital logic, two "nots" cancel one another out. So I'd imagine that two "not exists" should lead to one "exists".

So a bisexual girl gamer would exist, but a bisexual English major girl gamer would be back to being non-existent.

Not sure where that leaves people who trust bisexuals, though, because that's two "not exists" but on two separate circuits...

I either need vastly more coffee, or need to lay off the caffeine.