Thick strap-on disappears between her glossy lips as the blonde stepsister gags hard, tears welling in her eyes. Hands clamped around the base, she forces it deeper until her throat flutters around the shaft. Bouncing on her knees, tits swaying loose, she moans around the girth before pulling back to gasp for air. Drool strings connect her chin to the dildo as she wipes her mouth and resumes, this time riding it raw with her pussy grinding against the base. Heavy breaths sync with each deep thrust, her belly tightening as she nears the edge before collapsing onto the bed, spent and shaking.