Teens are bonding over Juul e-cigarettes on social media, a new study suggests.

California researchers looked through more than 80,000 tweets that mentioned Juul, which delivers nicotine from a device that is the size and shape of a thumb drive.

“We saw posts about using Juul or seeing someone else use Juul in elementary, middle or high school,” lead study author Jon-Patrick Allem of the University of Southern California’s Keck School of Medicine in Los Angeles told HealthDay. “Posts talked about using Juul in a school bathroom or at recess, and even in gym class.”

Although Juul is marketed as a smoking alternative, very few Twitter users mentioned smoking cessation with Juul, the researchers report in the journal Drug and Alcohol Dependence.