Not Cool
If someone is going to get a tattoo, they should give serious consideration to what kind of “cool” design they want, as opposed to getting a symbol or logo that can be purchased at a discount store. That’s why you need those stamps in your envelope. In the event that he is in the mood for something other than red and black, they come in a variety of colors.
It would appear that there is a lone individual on his left leg, a frowning face among a crowd of smiling faces. Could that very act have some symbolic meaning? It’s too bad we can’t ask him why he chose this design or why we should have bothered to get tattooed in the first place. This pattern is featured on some people’s socks.