A party, most generally one that is, well, chock full of hoot, with just a little bit of nanny.
Oz: We should figure out what kinda deal this is. I mean, is it a-a gathering, a shindig or a hootenanny?
Cordelia: What's the difference?
Oz: Well, a gathering is brie, mellow song stylings; shindig: dip, less mellow song stylings, perhaps a large amount of malt beverage; and hootenanny, well, it's chock full of hoot, just a little bit of nanny.
n. A LAN party also meeting the parameters necessary for a hootenanny, especially when occurring south of the Mason-Dixon line. WARNING: In order for a LAN party to be an official "LAN hootenanny", ALL ethernet cables MUST be home-made, and include at least four (4) VISIBLE home-made connections. Solder on those connections is highly optional! Excessive use of duct-tape on, around, inside of, or across any computers at a LAN hootenanny should always be expected. Excessive use of the word aight is recommended for the full effect.
OneShot: Hey, Btone, what we gonna do this here comin' weekend?
Btone: Well heck, I don' know. What you say we have us a LAN hootenanny!?
1. A word commonly used by cowboys and other Southern folk; means roundabout, gathering, party, or just a plain old fucking good time.
2. A gathering that involves mischief, paganism, or other heinous acts.
1. Jesus, Clem, did'ja go ta that ole good hootnanny last night? Dang, that was a quesa-dilla worthy cowboy hunchback sunnuvabitch cockfight we had!"
2. "Don't leave, Janet. The boys will talk to you, touch you, take off your clothes, and before you know it, a hootnanny will come out of your anus and we'll all be to blame."