Brendan Gleeson shares a shocking secret in Please Don't Destroy's 'SNL' sketch

There's nothing worse than finding out your best friend in high school was actually a 67-year-old Irishman pretending to be a high school senior, is there?

Well, that's exactly what happens in the new sketch from Saturday Night Live's resident comedy trio Please Don't Destroy. In the pre-recorded sketch, Brendan Gleeson plays...