A phrase meaning busy with, or swamped with.
"I'm up to my knees in homework"
Being in lots of trouble, almost a lil over your head, or physically in mud, water, shit, what have u.
You are knee deep in fecal matter
To be saturated in trouble/joy physically or figuratively
I was knee deep in shit.
I was knee deep in skooch.
When performing deep RECTALINGUS and you still can't reach the SHIT with your tongue.
SCOTT today I keep sucking and sucking your BUTTHOLE deep but you must have done DEEP SHIT. as I still can't reach my meal.
To have you tongue so deep in a lady her pussy swallows your face
She sat on my face last night, man be ear deep in that pissy