You guys have it all wrong. You have to consider something someone will actually wear.
Something with a big arse vgchartz logo is not going to sell but to a few people.
That is why my idea of using the quirky little jabs at signing up for an account are better. They are humorous and people like funny. Just go to Target / Walmart and see how many silly shirts with funny quotes are there. Some of those sayings are pretty funny and would sell.