For a change of pace, here's a limerick; "( (12 + 144 + 20 + 3 Sqrt[4]) / 7 ) + 5*11 = 9^2 + 0"

Sorry, did that not make any sense?

How about -

"A dozen, a gross, and a score,

plus three times the square root of four,

divided by seven,

plus five times eleven,

is nine squared and not a bit more."