Washing my hands after having to deal with just about any chain that isn’t mine. Second worse is washing a bike after some clown used homebrew chain lube
on every thing.
Even the shifters!
I’d elevate it to first but I have to wash my hands far more often. It usually takes a week for me to get the gunk out of the cracks in my skin after a day at the co-op. Just in time for another shift.
Cleaning tip on a bike this bad: use
Armorall Extreme Foaming Wheel Cleaner on it. Nothing else cut through the oily mess.