The Bedlock. The Bedlock modifies the traditional missionary position and improves it. The male takes his position by kneeling down on the bed while his partner lays down flat with her legs wrapped around him. Pulling up her hips to his crotch, the man enters inside while she arches her back and locks her arm for support. When in the Bedlock position, the man can stimulate his partner's body with teasing and tantalizing tongue flicks.