c) In and out of fashion.
You don’t have to be very observant to realize that tattoos and body piercings have spread substantially among the population in Spain. That tendency is regardless of age and gender (but the tendency might be almost restricted to working and middle-class people, though.)
Most of them get what they call a “tribal tattoo” which is basically a symbolic pattern whose meaning they ignore. They may also choose some eastern characters that stand for their names or their mothers’ or offsprings’. This election is made exclusively based in aesthetic factors. In general, they don’t have a special interest in eastern cultures or languages. (That means that a tattooer could have teased them and they go all over the place with “I’m a prick” written on their left arm.)
I’ve also noticed, lately, a dramatic tendency among some teenagers to wear baggy jeans below their arse. This allows the underpants to be seen (I suppose that’s the point, but I’m not sure.) Some of these teenagers might combine this aesthetic with the practice of skateboarding. I don’t have a clue what music they listen to.