Legacy code huh?
Well i'd say it would be when i was workng on an old java app that was apparently written by a retard.

He had used strings to represent booleans for no apparent reason. As if that wasn't bad enough he would use different strings too:
Y N true false 1 0

He used them randomly too , y and 0
N and true
😡

I sense it was done on purpose
Perhaps he knew he was leaving soon