Mountain Biker slang for a
wheel that has met a
rock or some other
obstruction quite forcibly, causing it to almost always
bend into the shape of a
taco shell (they started out as nice round
tortillas, remember?). very much unrideable at this point. the
tire,
tube,
spokes,
nipples and
hubs are often recoverable, but the
rim is now a
souvenir of whatever you just hit. usually used as a verb in past tense:
"Dude, i endoed over all that nasty washboard and tacoed my front wheel. That's the third one on this trail!"