When you realize....you have to cut that seatpost out. Argh!!!!!!

When you realize the Campy crank arm threads are coming out with the pedal.


Or when you realize the nice used Campy record rear hub you just bought has French FW threads.

It's easy enough to assume that all headsets have loose balls, and prevent the problem by working on headsets upside down so gravity is your friend.

Or spread a blanket on the floor until you know if they are caged or not.

Very specific misery moment!

...when the front wheel flops around and the side-pull caliper puts a gak in the paint where there wasn't one.

I just removed all my kitchen appliances which is where I work on my bearings and I may have found one or ten.

when the package arrives and you realized you ordered only one tire instead of a pair.

...when your bare foot finds the loose cable clipping that embedded itself in your carpeted () workshop.

That's what I do. My shop floor isn't the Bermuda Traingle. It's a huge black hole.
It seems to suck things up. Never to be seen again.
Yesterday it was a Snap On 1/8 inch punch, of all things.
Gone.

Been there, done that. Rode home 20 miles using one leg.

Imagine the added embarrassment when this happens at Le Cirque, on the big ride, and in the process of unclipping, you narrowly avoid toppling over onto Jan Heine. I only had to manage about 12 miles with 1.x feet on the pedals, but thankfully, someone's comment that he was impressed by my balance, moved me 2 degrees of separation from complete disgrace.

+1

... You forgot that you'd only thumb-tightened the quick release.

You emerge from a half mile walk through a pitch black rail-trail tunnel you navigated with your phone's led light and notice one of your cleats is missing.

...when you see a particularly touchy feely customer walk towards the 'employee parking' section of the display rack

I dissemble most things over a great big stainless steel bowl with one or two large speaker magnets in the bottom. Usually works pretty well. Got a lot of techniques for doing the floor search, up to and including throwing another one down in the same spot to try to track the motion... Most of the time its not worth looking for anything that does get dropped, unless I want to find something lost three projects earlier.

My father was working on his X-19 and a large spring on a compression tool popped loose and flew across the shop. Big red spring, we saw it flying off in a general direction, so knew what corner of the shop to look in. Not there, so started spreading out the search pattern. After over an hour, lots of cussing(even more than working on a fiat usually calls for)and still could not find it. Moved everything looking for it. Eventually found it where it had bounce up under a roll-away and hung up suspended just out of sight.

When you find the dent after spending beaucoup bucks on a new paint job.

Gugie's Deepest Darkest Corner Theorem:

"Small parts that spring forth from that which you are working on will seek out and find the deepest, darkest corner of your shop"

OT but true story. Cleaning a Wippermann 8speed chain in the backyard and lost the quick link in the long grass. After several hours searching, dusk became night and the search party was called off. I kid you not a year passed and a spot of gardening revealed you guessed it - the missing link. Waste not want not so after a clean up went straight back on the bike.

23, 24, or 25. fill it up and take one out. Or two, it's not critical just so long as the race is not full.

edit, oh, no. I've never counted 25!

I wish that were true. Then I would just go to that corner and find all the stuff I'm missing -- probably all those missing socks. too.

Recent frustrating experience:
Trying to thread the screw into the nut on a springy cable clamp for those bike that don't have top tube braze-ons for the rear cable routing. Clamps on the top tube of a Peugeot PRN10 in this case, but could have been a bunch of other examples from the 70s. Dropped that little, bitty nut about 3 times and then got out the small, needle nosed vise grips. Took way to long crawling around retrieving that nut.

I will echo many of you, laughing in the shared misery, but the cable clipping one is a killer. Especially as my carpeted apartment is my bike shop/garage (one decent portion of the living room.

You must not be talking about a French headset. They have about 512 to 517, each one about .25mm in diameter.

I hate that moment when I remember to check the weather radar before starting my commute home and discover that a huge ominous thunderstorm is about to engulf the entire town, that if I'd checked just half an hour earlier I might have been able to outrun it. Aaaaagh!

When you realize that the computer stopped working, and you want to keep track on a century.