Your shawl is so big you can use it as a full body straight jacket.
Your shawl is so big it the Dream Lifter can use it as a parachute.
(image found here http://www.airliners.net/photo/Boeing/Boeing-747-409(LCF)-Dreamlifter/1488736/L/ )
Your shawl is so big it can keep the US Olympic Ski team warm.
Your shawl is so big you can't knit across it without taking a cat nap.
Your shawl is so big your friends think you've lost your mind.
I'm seven rows into the last 20 rows of stockinette then I just have the border.
I'm contemplating a stiff drink when it comes to bind off time.