Everybody wants to have fun, and you have a suggestion that will work for everybody. It's more of a warning than a suggestion, really, but at least it gives them the goods in no uncertain terms: like Greta Garbo, you want to be left alone. You're not what we would call a sociable person. You're more on the reserved side. Meaning that your table is reserved for one. Silence is golden and this tee lets them know that's the motto you live by.