I was watching the Duke game on ESPN classic yesterday night. The Lead blows a foul and signals a push. The commentators, "Over the back". This is why everyone says it, because the commentators say it. Someone should give these commentators a copy of the rule book, or teach them something about the definitions and terms of the sport.
On another note, last saturday i had a coach say the following.
"He's reaching over the back"
It was really hard to hold back my laughter in that situation, but i managed it.