Another guess what photo

I'm afraid, because I only just got back from swimming and I'm ready for bed. Today I forgot my swipe card, so I had to be let into my office and then couldn't get out, and the key to my filing cabinet is on my swipe card so we had to try and break into my drawers before finding the master key.

However, there was chocolate marble cake (with Tescos chocolate flavoured cake covering), which made everything better.

Today there was:
An americano
A mocha
A tea
Some laminating
Some photoshop
A kilometre of swimming in 15 minutes. That's fast (unless I missed out some numbers when I was counting the lengths)