Check out this link on Lost Eye with a list of funny analogies that students have written. Apparently the Washington post held a contest in which high school teachers sent in the “worst” analogies they’d encountered in grading their students’ papers over the years.
Here's a couple of my favorites:
She walked into my office like a centipede with 98 missing legs.
The politician was gone but unnoticed, like the period after the Dr. on a Dr Pepper can.
She caught your eye like one of those pointy hook latches that used to dangle from screen doors and would fly up whenever you banged the door open again.
Bob was as perplexed as a hacker who means to access T:flw.quid55328.com\aaakk/ch@ung but gets T:\flw.quidaaakk/ch@ung by mistake.