You have arrived to fix Britney's computer and as you get under the desk you notice that you can see straight up her skirt, you can feel your dick getting hard in your trousers and decide to see if you can have a sneaky wank under the desk without her noticing! It's not long before Britney catches you with your cock in your hands but instead of telling you off she encourages you to carry on wanking and even slips her panties off.
