Bonnie has really injured her foot falling over a curb yesterday... Lucky for her you're qualified to look at it and give her a medical opinion! Your girlfriend (Bonnie's housemate) told you to have a look for her and do her a favor, she's downstairs watching TV. You tell her that you'll happily look at Bonnie's feet, you won't tell your girlfriend this, but you do love looking at feet anyway, it gets you super hard... What she doesn't know won't hurt her!