torpornap
An overwhelming, irresistable, deep sleep nap. You might drool, the world might end, but you wouldn't know it. Based upon torpor, which is the state of a hibernating animal.
Jane: My secret to productivity is that after lunch I take a power nap.
Bill: Screw that! I'm taking a torpornap.
Bill: Screw that! I'm taking a torpornap.