Black eye

I was on a train today to Pitzburg with a black eye and the guy next to me also had a black eye. I asked him how he got his shiner.

He said "when I was at the ticket office, instead of saying 2 tickets to Pitzburg, I said to pickets to Titzburg. How did you get yours?"

"Very similar actually. This morning instead of saying to my wife, ‘Can I have some Frosties?’ I said,

Spoiler:

‘you’ve ruined my life you fat cow’"