On May 5, Olympic gold-medalist Michael Phelps' fiancée​ Nicole Johnson gave birth to a baby boy, whom the couple named Boomer (he is indeed a human baby, and not an Irish Setter, but they still went with Boomer for the name, so okay, fine, whatever). The baby has already made a few appearances on Phelps' Instagram, but on Sunday, Boomer and papa enjoyed their first "bros broin' out" photo, in honor of little Boom's one month birthday. Aw, baby's first bro time!

Boomer says what's up y'all!!! @nicole.m.johnson

A post shared by Michael Phelps (@m_phelps00) on