Going for a Johnathon

Going for a Johnathon is where you work on a night shift and skive off by going to the toilets for the sole purpose of playing with yourself

Back in a few, just Going for a Johnathon

Doing a Trevor

When you try to improve something, but end up making it the same or much worse

I tried to implement a better system where we can impose improvements to the product.. But I ended up doing a Trevor.