Oh hell no- you got to be kidding me!

Go to a restaurant and find the meanest strongest looking guy. Walk up to him and introduce yourself asking him his name - Then call the hostess describing the man perfectly- tell her you cannot get a hold of a man who should be eating at the restaurant and how you have horrible news that his mother was in an accident and is at the local hospital. Beg the hostess to relay the message. Wait and watch her tell the man the awful news.
One minute later call the hostess up again and tell her that there was a terrible mistake and that the person in the accident was not his mother - it was just a pile of dog shit that had been run over. Tell her to relay the message and hang up.

Nice Horsey

You decide its time for the hospital to have some fun. You release 5 large broncos into the hospital, but make sure it is at 4 different exits of the hospital.
Hopefully, one horse will make its way to the ICU
and smash into repsirators; and just cause people to run for their lives.
Now this would be hysterical, like for example, you to turn the corner and you see old people and young running for their lives and down the hall you see a giant horse galloping.
Also to piss the horses off, brand them as you release them into the hospital.