as explained by: urban:s***d
reminescent of the phrase "[in like flynn]."
means you have [extraordinary] [dumb luck]. that party was so flynn,
some drunk chick
[went down] [on me] and gave me a $20 [tip]! - Flynn
is an Irish
surname, anglicised form Ó Floinn, meaning "descendant Flann" (a byname "reddish (complexion)" or "ruddy"...