If eyeball tattoo is possible, then why not a tongue tattoo? Brave! But I am amazed, how nasty a man’s thought can get. This sign is made for ladiesâ bathroom at public places. And this fellow has tattooed it on his tongue (that too with double piercing on it). So, the meaning is anyone’s guess! I think he should stand at the theaters and airport to greet the hasty ladies. At least it will save their time. What a crazy idea!