The Eagle Sex Position is a missionary pose where one partner lies on their back with their legs spread apart, or “spread eagle.”
How to do it:
She lies on her back and lifts her legs up and back toward her head. Her partner kneels in front and penetrates, holding her legs for support.
Lifting her legs up narrows her vagina and allows him to plunge incredibly deep.
Vary the pace and intensity by switching between fast and shallow strokes and deep, slow ones.