She undoes her top, letting the fabric fall to the wayside as her annoyed expression turns flustered.
"D...Don't gawk like that, Battery. They're just breasts." she stammers at you. "You'd better show me you appreciate this, and give me lots of strokes. Ah, but don't you DARE think about spraying on them right now! Hold it in..."
[50 strokes]
As you're stroking, however.. A knock interrupts your tender moment, and the woman flinches.