There once was a man from Japan
whose limericks just wouldn't scan.
When asked why this was,
he answered, "Because
I always cram as many syllables into the last line as I possibly can."

There once was a man named Bertold
Who drank beer when the weather grew cold
As he reached for his cup...
"NEEEEVER GONNA GIVE YOU UP!!!"
Oh, snap! You just got limerickrolled!
http://limerickdb.com/?top150