If there really was a Speedy Rainbow Pizza Company, we reckon they might have a T shirt a bit like this.
Features the 'logo' and the tag line 'Cramming it in your gob since 2017'

Breathe! And relax, with this T shirt remembering the good old days

Not feeling it? Don't worry - we can't all enjoy Xmas all the time. This printed sweatshirt has a tree and the helpful message "This Xmas, just .... don't! OK?"

We can't guarantee it'll help you avoid arguments, but it's worth a try.