Can I go?

I asked the boss last Friday at 2 o'clock if I could go early to watch the football.

I said "I swear I'll make the time up".

Boss: "Okay, as long as you do that's fine with me".

He said today "Why does your time sheet say you worked until 5.30 on Friday?"

Me:

Spoiler:

"I told you I'd make it up".