Stupid question...BUT.....

[BlakeOfDoom]

what the heck does UPD mean? or any other of the acronyms I see so liberally posted around the forums,

[TheObieOne3226]

unplanned dismount

[spazdude222]

Unicycle/Pedestrian Dual. It's when someone walking makes a HILARIOUS joke about us missing a wheel, and we attack them.

[Phil_on_uni]

unicycle personalized dismount...

i do a burntwist off of mine

[Fraggle]

Unicycle/Pedestrian Dual. It's when someone walking makes a HILARIOUS joke about us missing a wheel, and we attack them.
Lol, I'm voting this one.

[Biggestbtc]

Another one that might confuse people, although I think it has its own thread, is UDC: Unicycle Dot Com=Unicycle.com=The Bestest Unicycle Store.:)