Persuasion at Its Finest: A Woman with Small Breasts Gives In

The woman is approached on the street and asked if she'd like to film a porn movie. She's not usually into that sort of thing, but somehow she agrees today. The man likes it because she's exactly his type. She's a natural woman with small breasts and seems to be naturally quite horny. How else can you explain why she immediately spreads her legs at this casting call and lets a complete stranger have sex with her?