No it is not true.

Absolutely not. You should beat that person up.

No .... unless both regulation basketballs have no air in them.

No not 2 fully pumped full sized basketballs

Ummm... you four should check up on your info. In Rick Torbett's Better Basketball DVD (Better Shooting), he clearly shows that two regulation sized balls (9 inches wide each) could fit inside one regulation-sized rim (18 inches wide). Therefore, doing the math, 9x2=18, so yes, two regulation-sized basketballs could fit through the rim at the same time, if placed exactly side-by-side. In addition, he specifically DID that exact action, lowering the rim to a very low height, then fitting the two balls through the rim at the same time.

A rim’s inside diameter is 18 inches and is mounted 6 inches out from the backboard and is exactly 10 feet above and perpendicular to the court. One and three quarters basketballs, side by side, will fit through the rim with room to spare (obviously there’s more room to spare with the smaller ball that is sometimes used by younger players). The first bank shot, more than likely the first shot period, everyone learns to shoot is a lay-up. Standing near the basket on the right side, if you shoot and hit the right corner of the box, above the basket, the ball will ricochet into the basket off of the backboard. On the left side the same is true if you shoot and hit the left corner of the box. Learning to shoot lay-ups from the right side with your right hand and the left side with your left hand is doing yourself, and your team, a tremendous favor. The ability to shoot with either hand around or close to the basket is a stupendous scoring asset. And while we’re talking about lay-ups, it is the highest percentage shot on the court. Three drills you should incorporate into your lay-up shooting practices are: shooting a lay-up running from half-court at full speed, shooting a lay-up after spinning under the basket, and shooting a lay-up off balance over a defender. See more info at www.basketballshootingcoach.com

no!!! but two basketballs could be stuck in the net at the same time if they land in the rim right after eachother