I was walking out my door one morning and bumped into Stuart's wife, who was wearing white shoes, white jeans and a white jacket. She asked where I was going to, and I said, "the bookies". So I did, and won £35!
A week later, I bumped into Stuart's wife again, and she was wearing white heels, a white skirt and a white blouse. She asked where I was going to, and I said, "the bookies". So I did, and won £100!
A week after that, I bumped into Stuart's wife, who was wearing white trainers and a white shell suit. She asked where I was going to, and I told her I was, yet again, going to the bookies. So I did, and won £150!
The cashier had said I hadn't been in that often to the bookies but my bets were well up, and she asked what my secret was.
I just replied, 'Lucky White Heather'...
(Did everyone see the irony in that joke because Stuart's wife's name is actually Sheila?)