I reckon they're Z's too.

Funny because you don't get too many Z's when you drink lots of coffee.

Unless, of course, you counteract it with plenty of Scotch.  😀

I've been listening on good quality headphones since Part 1, but watching on my computer monitor rather than a really big screen. But the sound definitely benefits from hearing it on headphones. 

Posted by: Mark Chamberlain Stevens

Posted by: MJ Gilbert

I hear there are 7s on the paper coffee cups in part 1

Just checked, those look like"Z's" to me-thanks for the tip!

Z's, related to the name of the coffee place Tracey works for.