An interjection sometimes used when backdating an unwritten post while writing a month long blog about your reading of David Foster Wallace's Infinite Jest. It simultaneously expresses the poster's regret for not having written and also glee for having gotten away with it.
I had a great weekend anyway! Ha!
by Aaron F. February 11, 2008
In poker, a game that alternates between Texas Hold'em and Omaha. Omaha is represented by "A" because in other poker acronyms (such as "HORSE"), "O" is used to mean Omaha Hi-Lo Split; in "HA" the Omaha game is High-only.
He spent all day in the online poker rooms, winning $1K in 7-card stud, but losing twice that much playing 5-card draw, HORSE, and HA.
by RandomStu February 26, 2009