Ensign Babyface

Ensign Babyface was a nickname given to a then-beardless William T. Riker by Lieutenant Boylen when he was an ensign onboard the USS Pegasus in 2358.

In 2370, Rear Admiral Erik Pressman reminded Riker of Boylen's nickname for him. Riker explained that he'd grown a beard partly due to similar comments about his youthful face. (TNG: "The Pegasus")