Besides "I'm hungry" and "I'm starving", where starving is more than hungry, are there other phrases to indicate how hungry you are (including slangs, if any)?
My own favourite is esurient. Other than that, ravenous and famished are both quite strong. Malnourished, undernourished, underfed indicate chronicity. Empty is used informally, as is peckish (which is British).
I've got the munchies!