piggybacking
n.— «Sometimes schools will have a student start the lesson by driving another student home, a practice known as “piggybacking.” If there is another student in the car, ask where your teen will be driving and whether the route is suited to his or her abilities.» —“Student drivers get safety checklist” by Tony Bizjak Sacramento Bee (California) Apr. 19, 2008. (source: Double-Tongued Dictionary)
Further reading
If you speak a second or third language, you may remember the first time you dreamed in that new tongue. But does this milestone mean you’re actually fluent? And a couple’s dispute over the word regret: Say you wish you’d been able...
Many of us struggled with the Old English poem “Beowulf” in high school. But what if you could actually hear “Beowulf” in the English of today? There’s a new translation by Maria Dahvana Headley that uses contemporary...