Another sign of getting old is it's not just the whippersnappers using slang I don't understand, now it's showing up it news headlines too. Also, current slang

Another sign of getting old is it's not just the whippersnappers using slang I don't understand, now it's showing up it news headlines too. Also, current slang in headlines seems like an odd choice anyway. I get there's a not-great pun there and all, but the article doesn't seem like it's written for an audience that already knows what "on blast" means.