term comes from professional basketball
player Ramon Sessions, guard for the Minnesota Timberwolves. A session (sesh) is when a bunch of buddies get together and
smoke a bunch of weed, resulting in everybody getting really
baked. Ram is just a synonym for sesh, just another way of saying it.
"Hey
man, you wanna ram after school?"
"Just finished my
calculus exam, and boy do i ever need to ram hard"