A loud exclamation of "HA", at maximum volume, whilst drunk at a bar. This exclamation may be optionally followed by some "has" at less volume. Primarily this behaviour has been observed on the East Coast of the USA, in cities such as Philadelphia, New York, and Washington D.C..

Got the covid-19 vaccine

1. The insipid laugh emitted by half drunk people at a singles bar when they are responding to the wit, wisdom and humor of other half drunk people hoping to score. sounds like - ha, ha, (slight pause) ha, ha, ha (intonation on the middle ha)

2. everyday use of a flirtatious laugh indicating possible interest in a member of the opposite sex, most frequently used by young women