What's the difference between i.e. and e.g.?
1877, hoop la, American English, earlier houp-la, exclamation accompanying quick movement (1870), of unknown origin, perhaps borrowed from French houp-là "upsy-daisy," also a cry to dogs, horses, etc.
[1877+; perhaps fr hoop-la!, the stagecoach driver's exhortation to his horses]