Left image: The image shows a text in english saying "Think Twice". The font seems very fashionable.
Right image: The image shows the face of a man with a tattoo on the left side of a forehead saying "Think Twice". The man is wearing a nose ring and has a cut on his left eyebrow. He also has a small tattoo of the cross a little below his left eye.
The image is funny because even thought the tattoo on the face of the man says "think twice", the man did not think twice before getting the tattoo on his forehead.