The designer is free to use his own imagination. Below is a couple of proposals from me, but if you have your own ideas, don't be afraid to use them!
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Designer is free to use his imagination when creating the t-shirt design. However, it is important that it is rather funny and attracts people's attention. My idea is something along the lines of a guy (maybe a charicature or cartoon) grinning and then there's a punchline below the image followed up by the address DingDingPoker.com
Do you Ding?
etc... Use your imagination!