knee high to a grasshopper

being very young or back when you where just a kid. possibly intending that someone is short.

"back when i was knee high to a grasshopper, we where never careful."
"your about knee high to a grasshopper arent you?"

knee high to a grasshopper by The Rye Guy April 23, 2008

kneehigh to a grass hopper 

very short person or object

fred - 'u seen jess recetly?' james - 'yer' fred - 'shes kneehigh to a grass hopper aint she'

kneehigh to a grass hopper by mmmcheese August 29, 2007