Day 197: The Day McCombers Got Irritated

A rather dull day at the paint shop, I returned home to find this message from McCombers on my fridge.
For a while now I've been keeping a tally on my fridge. McCombers doesn't know what I'm keeping a tally of, I will probably tell her eventually. It's fun just now though.

Can you guess what I'm keeping a tally of?