I lectured her about the terrors of masturbation (while all the time having a massive erection myself and really wanting to wank myself off while loooking at her) and finished up by telling her she was going to be caned and ordered her to bend over the front of 'her' class desk. please don't cane me!'
As she saw my look of total astonishment at this outburst, she added ' I know you said I'd get the cane if I played with myself again