...and get blamed for finding out.
Mate brings bike to my place complaining wheel is difficult to get into dropout.
I suspect broken derailleur hanger, or dropout in frame.
Remove hanger and it shears off into two pieces.
Mate gets hugely pissed off. To be fair, I've been a bit evasive about what could be wrong, because I don't want him to think his frame is ****. That would be a 4 figure expense.
Mate pretty much blames me for the problem and takes off. I am left feeling like a Richardhead.
Moral of story: Never spanner for a spannerhead.