Recently, the NBA and the officials have decided to take a stand on “unnatural acts,” and when they mean unnatural acts, they pertain to seemingly intentional hits to the groin.

The “Draymond Green Rule” has brought to mind some other acts or items outlawed by the NBA rulebook, and they are as follows:

The earbud ban:

Back in 2004, the NBA banned iPods and earbuds during pregame warmups because they didn't conform to the league's rules with proper attire on the court. One player that was affected by the rule was Toronto Raptors star Vince Carter. He wore them while taking jump shots before the game to help him focus during his pregame routine. Carter's reaction:

It’s going to hurt [my routine] big time. I like to listen to music when I’m working out, doing all that. That was my chance to really kind of relax yet focus in. I focus in when I have music on.

A month after the rule was instated, Carter was traded to the New Jersey Nets.

The Big Balls Dance:

In 2006, the Los Angeles Clippers and Phoenix Suns were going head-to-head in the Western Conference Semi-finals. During Game 4, Sam Cassell scored 28 points, dished out nine assists, and also hit a clutch three-pointer to put the Clippers up by six points with 27 seconds left. However, while running up the court, he dropped his hands by his groin and bounced them up and down to imply the juggling of big balls.

Currently, the NBA fines a player $15,000 dollars when they do that dance. After playing for the Clippers, Sam Cassell went to the Celtics and won his third NBA championship.

Band-Aids: 

In 2009, Nelly popularized band aids on the face, and Dwyane Wade wore them during the season, under his left eye. The NBA put a stop to that because they weren't being used for medical purposes.

Straw Chewing:

In 2010, the NBA banned two-time All-Star and NBA champion Caron Butler from chewing straws on the sideline because they felt that it was a safety issue.

Upside-down headband: 

Also in 2010, the league announced that the rules for uniforms no longer allowed players to wear headbands upside down. One player who wore it upside down constantly was Rajon Rondo who was then playing for the Boston Celtics.

Black face mask: 

During the 2013-2014 season, LeBron James broke his nose in a game against the Oklahoma City Thunder. Because his clear mask was not ready for a game against the New York Knicks, he decided to wear a black carbon fibre face mask to protect himself. The league wasn't too pleased for some reason, and he had to go back to the clear mask.

Whoop wrist-wear: 

Whoop is used to measure health-related data, such as your heart rate and your internal temperature. Former Cavaliers point guard Matthew Dellavedova wore a Whoop bracelet for a number of games last season. The NBA noticed and decided to ban the Whoop bracelet because it broke the rules on wearable technology.

(h/t SBNation)