To put off until the day after tomorrow; to keep postponing from day to day.
If you know that cras is the Latin word for "tomorrow," then it's easy to see where we get the word procrastinate.
To perendinate, on the other hand, means in its most literal sense to "put off something until the day after tomorrow." It comes from the Latin perendie -- literally, "on the day after tomorrow."
"Why no, sir, I haven't started that report yet, but I can assure you I'll start perendinating as soon as we get back from lunch!"
I like this one!