Those are nipple guards, they're for running.
Community SE2EP17 "Custody Law and Eastern European Diplomacy".
Jeff Winger Britta Perry Abed Nadir Annie Edison Craig Pelton Ben Chang Shirley Bennett Troy Barnes Pierce Hawthorne
When Jeff left the apartment with the boys to return them to their parents, Chang sent the police after him and got him arrested for kidnapping. With the help of Shirley and Andre, Jeff managed to have those charges revoked, although he ended up spending a night in jail
Fair use.