Ask HN: What's the worst thing you've ever seen when reviewing code

[treebeard5440]

I have two (both many years ago)

1. Every line of every file in the project had its line ending changed

2. Python script that called a python script that called another python script

Anyone else have some good ones?

[l_j_w]

A contractor placed a web service call in the onPaint() method of a .NET Windows Forms application. This blocked the paint from happening until the service call finished, causing the app to just be a blank white window.

[adastra22]

Duff’s device.

[Tommstein]

Off the top of my head, code that didn't even run due to syntax errors.