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
Unwrap the name of a candy bar, and you just might find a story inside. For instance, one chewy treat found in many a checkout lane is named after a family’s beloved horse. And: 50 years ago in the United States, some Latino elementary...
An elementary music teacher in Cheyenne, Wyoming, reports that on a cold and windy day, one of her three-year-old students declared that she wished they were all on a sandy beach where they could change into their zucchinis. It was clearly a...