In basketball, players often give and receive contact when going after rebounds. This often results in players reaching over the back of their opponents to grab the rebound. While over the back is not a foul itself, it is often used as a complaint from players, coaches, fans, announcers, and analysts.
In reality, there is no "over the back" foul. A taller player simply reaching higher than other players is not a foul-even if it is over the back of an opponent-unless there is some sort of illegal contact made. Illegal contact that results from an attempted rebound is often present when people are looking for an over the back call. This is a common personal foul that is added to the squad's team fouls total. This illegal contact usually includes pushing, holding, or checking an opponent to get the board. A referee will usually use a pushing signal to indicate an "over the back" foul.