A leprechaun with leprosy.
"After getting leprosy and watching his lucky charms fall off, Lucky the Leperchaun wandered the town ringing a small bell, crying 'Unclean!'."
An escalator that goes up. Opposite of a downscalator.
"We wandered the whole damn mall, trying to find an upscalator to the second floor."
A picnic at which more than three people vomit.
"The mayonnaise was bad, and the company picnic turned into a sicknic really fast."