The Under the Hood version of cunnilingus has the receiver lay on their back with their legs raised up pointing toward the ceiling. The exact end position will depend on the flexibility of the receiver. This position exposes the groin area to the giving partner who kneels there to perform. The giver is also able to use their hands to caress and explore their partner's whole body.
This position requires some flexibility on the part of the receiver. Those less flexible might try getting into the position, but stop at the point where the position starts to become uncomfortable. The giver can also help those less flexible by using their hands to support the receiver's thighs at mid-point. The female equivalent of this position is called Southern Exposure.