Levi Johnston and his pregnant girlfriend announced the baby name they've chosen in an interview taped Tuesday, and that evening Bristol Palin took to Facebook to show off her son with Johnston.
"So grown up!!!" she wrote next to this photo of Tripp, 3.
Levi's second child will be a girl named Breeze Beretta, after the gun.
Below, other unusual baby names:
Daughter of Gwyneth Paltrow and Chris Martin