Conventional Terms:

an Eagle—two under par, an impossible dream.
a Birdie—one under par, a dream.
a Par—occasionally a reality.
a Bogey—one over par, where we hope to score.
a Double Bogey—two over par, a frequent friend.
an Other—three or more over par, also a frequent friend.

Additional BGA Terms:

a Levering—useful term describing a score of 1 under double par.
Sounds much nicer that a 9 on a par 5. “Gimme a Levering on that one!”
a Hangman—7, also called a “hanger.”
a Snowman—8, a staple of BGA players.
an El Niño—not Sergio, but an ill wind that blows you a 9.
a Pavoratti—originally a TEN OR more; now just refers to a score of 10.
Requires an outburst of song rather than swearing; a kinder,
gentler way to play bad golf.
a Streckfus—11, named after the BGA’s career record holder for this score.
a Levine—13, see how he got his nickname.
a Corker—15.
a Commish—16.
a Johnny U—19, the current BGA record score.
the Frank Robby—20, surely an achievable score.
the Jim Palmer—22, will be another Hall of Fame achievement.