Drinking at a party, to the point of über silliness is common an accepted. It's still not prudent and you still have to deal with the consequences the next morning (and maybe for the rest of your life in certain circumstances.)
So, it's an "are you prepared to deal with the consequences?" kind of thing. Maybe the teenage girl had already decided she'd pick something small and unobtrusive and had chosen a discreet location for the work. Maybe, and here's where imprudence comes in, she walked by a tattoo shop with her friend and decided "a tattoo would be, like, totally hardcore!" and gave it no more thought.
Drinking at a party, to the point of über silliness is common an accepted. It's still not prudent and you still have to deal with the consequences the next morning (and maybe for the rest of your life in certain circumstances.)
So, it's an "are you prepared to deal with the consequences?" kind of thing. Maybe the teenage girl had already decided she'd pick something small and unobtrusive and had chosen a discreet location for the work. Maybe, and here's where imprudence comes in, she walked by a tattoo shop with her friend and decided "a tattoo would be, like, totally hardcore!" and gave it no more thought.