We were about 15 at the time and my cousin was staying over as her parents were out of town.

We were playing on the games console (a racing game) and she had beaten me a couple of times. She ridiculed me for being so rubbish at a boys game and I had let the males down. Fairly irritated I asked her if she was so confident would she put a wager on the race say £20. She laughed at me and said she was so confident she would beat me again she would run round the room naked with her panties on her head if she didn't. Long story short she lost and did the forfeit.

The next race I got a bit ahead of myself and said I was that confident I would run down our street naked with her bra on my head. Long story shortened again she ran me off the road so I crashed and lost the race by a few laps so she said I had to do an extra run for each lap (2). Yep quite a lot of people saw me that night. Not good.