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SIENA uses REGRET! It's super effective!

That would be Dappy, showing off his hashtag tattoo (hashtat?) in a selfie he recently shared. He picked up the ink to be "trending forever," though nothing Dappy-related has popped up on Twitter's list of hot topics.

The best part? Dappy is best known for his song "No Regrets." We'll see how that turns out.