Call in sick. What are they gonna do, fire you? 
Except I wouldn't miss last day for the world! It's only when someone leaves that you actually are appreciated - there'll be gifts & a speech, etc. I'll need to go get some food for everyone, but that'll be on the clock. And I'll have my exit interview (slate time!) - ha ha, no I won't be burning my bridges, not very much anyway...

You are TOO COOL!
Ha ha - thanks!

I sort of have a 'first aid crisis mode' I go into - as long as there isn't a copious quantity of blood (in which case I'd pass out, but a little blood I can do). I think it's owing to a) having had a nurse for a mom, and b) all the times I had to pick up & patch up my mom from her many bad falls.
At first, the tiler guy and I just thought it was part of the cast iron soil pipe (being removed) that crashed to the ground & then we realised it was the part of the soil pipe, the ladder,
and the plumber himself.
After it was all said & done and his shirt was back on & he went back to work, then I had a hyperventilating delayed reaction to it all - thinking, my god he's/that was HOT!