Referring to someone who is a homosexual male. Derrived from the HBO series "The Sopranos", in which Vito, the gay mobster, found a love interest who would "make him his famous Johnny Cakes". Vito loves those Johnny Cakes, and would either order a "tall stack" or a "short stack".
"Look, there's Ryan Secrest. I wonder who's flippin' his Johnny Cakes?"